A303977 Number of inequivalent solutions to problem discussed in A286874.

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

Offset: 0

Author

Zhao Hui Du, May 03 2018

Keywords

• nonn
• more

Comments

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

Examples

			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}
		

Crossrefs

Cf. A286874.

Extensions

a(12) by Steinar H. Gunderson, Jul 08 2025

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