A269396 Permutation of natural numbers: a(n) = A269394(A269172(n)) = A269172(3*A269172(n)) / 3.

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 25, 20, 21, 22, 19, 24, 23, 26, 27, 28, 29, 30, 45, 32, 33, 34, 35, 36, 31, 50, 39, 40, 49, 42, 41, 44, 37, 38, 43, 48, 55, 46, 51, 52, 47, 54, 105, 56, 57, 58, 77, 60, 53, 90, 63, 64, 65, 66, 59, 68, 69, 70, 97, 72, 181, 62, 99, 100, 67, 78, 81, 80, 73

Offset: 1

Author

Antti Karttunen, Mar 03 2016

Keywords

• nonn

Comments

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

Links

• Index entries for sequences that are permutations of the natural numbers

Crossrefs

Inverse: A269395.

Cf. A269394.

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

Programs

Scheme

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

Formula

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