A246204 Permutation of natural numbers: a(n) = A193231(A246202(n)).

1, 5, 3, 15, 13, 4, 2, 9, 25, 16, 59, 14, 11, 6, 7, 21, 41, 63, 211, 30, 67, 43, 299, 8, 55, 20, 47, 12, 19, 10, 31, 26, 109, 92, 451, 36, 285, 178, 1615, 50, 253, 108, 1019, 93, 477, 370, 3487, 23, 87, 35, 157, 27, 97, 95, 487, 17, 61, 28, 103, 18, 37, 48, 241, 52, 203, 249, 587, 101, 803, 401, 4591, 83, 369

Offset: 1

Author

Antti Karttunen, Aug 19 2014

Keywords

• nonn

Links

• Antti Karttunen, Table of n, a(n) for n = 1..157
• Index entries for sequences operating on GF(2)[X]-polynomials
• Index entries for sequences that are permutations of the natural numbers

Crossrefs

Inverse: A246203.

Related permutations: A193231, A246202, A246164.

Cf. A000035, A091225.

Programs

Scheme

(define (A246204 n) (A193231 (A246202 n)))

Formula

a(n) = A193231(A246202(n)).

a(n) = A193231(A246164(A193231(n))).

Other identities:

For all n > 1, A091225(a(n)) = A000035(n). [After 1, maps even numbers to binary representations of reducible GF(2) polynomials and odd numbers to the corresponding representations of irreducible polynomials, in some order. A246202 has the same property].