A266197 Indices of "good matches" produced by match-making permutation A266195; numbers n for which A070939(A266195(n)) = A070939(A266195(n+1)), where A070939(n) gives the length of base-2 representation of n.

2, 4, 5, 9, 10, 18, 19, 26, 34, 37, 38, 58, 61, 62, 66, 67, 129, 130, 133, 137, 138, 158, 286, 287, 290, 292, 301, 302, 311, 318, 365, 366, 371, 379, 382, 384, 561, 562, 563, 627, 628, 629, 630, 631, 633, 639, 644, 646, 680, 683, 688, 767, 768, 775, 776, 777, 778, 780, 913, 914, 915, 918, 919, 920, 923, 924, 925, 926, 927, 928, 930, 931, 932, 933, 939, 1315

Offset: 1

Author

Antti Karttunen, Dec 26 2015

Keywords

• nonn
• base

Comments

Numbers n for which A264982(n) = A264982(n+1).

It would be nice to know whether this sequence is infinite.

Links

• Rémy Sigrist, Table of n, a(n) for n = 1..10000 (first 154 terms from Antti Karttunen)

Crossrefs

Cf. A070939, A264982, A266195.

Cf. A265748, A265749 (give the first and second members of pairs indexed by this sequence).