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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. 5
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

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) [If you supply more terms for b-file, then please update A265748 and A265749 as well.]

PROG

(Scheme, with Antti Karttunen's IntSeq-library)

(define A266197 (MATCHING-POS 1 1 (lambda (n) (= (A070939 (A266195 n)) (A070939 (A266195 (+ 1 n)))))))

CROSSREFS

Cf. A070939, A264982, A266195.

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

Sequence in context: A175265 A320225 A070924 * A086638 A319423 A265748

Adjacent sequences:  A266194 A266195 A266196 * A266198 A266199 A266200

KEYWORD

nonn,base

AUTHOR

Antti Karttunen, Dec 26 2015

STATUS

approved

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Last modified October 16 23:30 EDT 2019. Contains 328103 sequences. (Running on oeis4.)