1,2

Composition of A269172 with a permutation of natural numbers obtained from its trisection.

Table of n, a(n) for n=1..81.

Index entries for sequences that are permutations of the natural numbers

a(n) = A269394(A269172(n)) = A269172(3*A269172(n)) / 3.

(Scheme) (define (A269396 n) (A269394 (A269172 n)))

Inverse: A269395.

Cf. A269394.

Differs from A255408 and A269172 for the first time at n=31, which here a(31)=45, instead of 49.

Sequence in context: A269171 A269395 A302025 * A255408 A269172 A302026

Adjacent sequences: A269393 A269394 A269395 * A269397 A269398 A269399

nonn

Antti Karttunen, Mar 03 2016

approved