A265338 - OEIS

A265338

Self-inverse permutation of nonnegative integers: a(n) = A264979(8*n) / 8.

0, 1, 8, 7, 6, 5, 4, 3, 2, 9, 10, 71, 62, 53, 44, 35, 26, 17, 72, 89, 80, 61, 52, 43, 34, 25, 16, 63, 88, 79, 70, 51, 42, 33, 24, 15, 54, 87, 78, 69, 60, 41, 32, 23, 14, 45, 86, 77, 68, 59, 50, 31, 22, 13, 36, 85, 76, 67, 58, 49, 40, 21, 12, 27, 84, 75, 66, 57, 48, 39, 30, 11, 18, 83, 74, 65, 56, 47, 38, 29, 20, 81

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OFFSET

0,3

COMMENTS

It appears that A264979(m x) == 0 (mod m) for m = 2^k and m = 5*2^k, k >= 0, but not for other m. Is there a simple explanation? - M. F. Hasler, May 21 2021

LINKS

Antti Karttunen, Table of n, a(n) for n = 0..7381

Index entries for sequences that are permutations of the natural numbers

FORMULA

a(n) = A264979(8*n) / 8.

PROG

(Scheme) (define (A265338 n) (/ (A264979 (* 8 n)) 8))

CROSSREFS

Cf. A264979.

Cf. also A264978.

Sequence in context: A031311 A344383 A055119 * A090915 A194756 A132672

Adjacent sequences: A265335 A265336 A265337 * A265339 A265340 A265341

KEYWORD

nonn,base

AUTHOR

Antti Karttunen, Dec 07 2015

STATUS

approved