A269395 Permutation of natural numbers: a(n) = A269171(A269393(n)) = A269171(A269171(3*n)/3).

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 23, 20, 21, 22, 25, 24, 19, 26, 27, 28, 29, 30, 37, 32, 33, 34, 35, 36, 45, 46, 39, 40, 43, 42, 47, 44, 31, 50, 53, 48, 41, 38, 51, 52, 61, 54, 49, 56, 57, 58, 67, 60, 89, 74, 63, 64, 65, 66, 77, 68, 69, 70, 83, 72, 81, 90, 85, 92, 59, 78, 91, 80, 79

Offset: 1

Author

Antti Karttunen, Mar 03 2016

Keywords

• nonn

Comments

Composition of A269171 with a permutation of natural numbers obtained from its trisection.

Links

• Antti Karttunen, Table of n, a(n) for n = 1..8192
• Index entries for sequences that are permutations of the natural numbers

Crossrefs

Inverse: A269396.

Cf. A269393.

Differs from A255407 and A269171 for the first time at n=37, which here a(37)=45, instead of 41.

Programs

Scheme

(define (A269395 n) (A269171 (A269393 n)))

Formula

a(n) = A269171(A269393(n)) = A269171(A269171(3*n)/3).