A303977 - OEIS

A303977

Number of inequivalent solutions to problem discussed in A286874.

1, 1, 1, 1, 1, 1, 1, 2, 4, 1, 5, 2, 5, 2, 788

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,8

COMMENTS

If one solution can be transformed to another by reordering the bits, they are considered to be equivalent.

LINKS

Table of n, a(n) for n=0..14.

Steinar H. Gunderson, all inequivalent solutions for a(14)

EXAMPLE

List of inequivalent solutions (in hexadecimal format):

0: {0}

1: {0 1}

2: {1 2}

3: {1 2 4}

4: {1 2 4 8}

5: {1 2 4 8 10}

6: {1 2 4 8 10 20}

7: {1 2 4 8 10 20 40}

{7 19 2a 34 4c 52 61}

8: {1 2 4 8 10 20 40 80}

{1 e 32 54 68 98 a4 c2}

{3 d 31 54 68 98 a4 c1}

{7 19 2a 4c 70 92 a4 c1}

9: {7 19 2a 4c 70 92 a4 c1 114 121 142 188}

10: {1 e 32 54 98 e0 124 148 182 228 242 284 310}

{3 d 31 54 98 e0 124 148 181 228 241 284 310}

{7 19 2a 34 4c 92 c1 121 142 184 250 2a0 308}

{7 19 2a 34 4c 92 c1 121 142 188 250 2a0 304}

{7 19 2a 4c 92 e0 121 150 184 234 241 288 302}

11: {7 19 2a 34 4c 92 c1 121 142 184 250 2a0 308 460 488 510 601}

{7 19 2a 34 4c 92 c1 121 142 188 250 2a0 304 460 484 510 601}

12: {7 19 2a 34 4c 92 121 1c0 241 284 302 442 488 510 620 850 8a0 904 a08 c01}

{7 19 2a 34 4c 92 121 1c0 241 284 302 442 488 510 620 860 881 908 a10 c04}

{7 19 2a 34 4c 92 121 1c0 241 284 308 442 488 510 620 860 881 902 a10 c04}

{7 19 2a 34 4c 92 121 1c0 241 284 308 442 4a0 504 610 850 881 902 a20 c08}

{7 19 2a 34 4c 92 121 1c0 241 284 308 442 4a0 504 610 850 888 902 a20 c01}

13: {7 19 2a 34 4c 92 121 1c0 241 284 302 442 488 510 620 850 8a0 904 a08 c01 1060 1081 1108 1210 1404 1802}

{7 19 2a 34 4c 92 121 1c0 241 284 308 442 4a0 504 610 850 888 902 a20 c01 1060 1081 1110 1202 1408 1804}

14: {7 19 2a 34 4c 52 61 181 282 304 484 502 601 888 910 a20 c40 1090 1108 1240 1420 1801 20a0 2140 2208 2410 2802 3004}

{7 19 2a 4c 70 92 a4 114 221 302 441 508 680 842 980 a04 c10 1088 1120 1240 1404 1801 20c0 2101 2210 2420 2808 3002}

{1f e3 16c 2b4 351 38a 4d8 932 c86 d09 e60 1185 1431 1542 160c 1854 18a8 1a03 2229 2445 25a0 2612 284a 2891 2b04 3026 3118 32c0}

(785 more, see the attached file above)

CROSSREFS

Cf. A286874.

Sequence in context: A132042 A060370 A318704 * A165064 A299918 A390470

Adjacent sequences: A303974 A303975 A303976 * A303978 A303979 A303980

KEYWORD

nonn,hard,more

AUTHOR

Zhao Hui Du, May 03 2018

EXTENSIONS

a(12)-a(13) by Steinar H. Gunderson, Jul 17 2025

a(14) by Steinar H. Gunderson, Feb 18 2026

STATUS

approved