A235047 Permutation of nonnegative integers: a(n) = A235199(A234840(n+1)-1).

0, 2, 1, 8, 18, 7, 84, 26, 3, 40, 14, 11, 280, 130, 37, 112, 196, 17, 4, 154, 289, 32, 262, 53, 504, 842, 5, 932, 20, 181, 86, 578, 15, 302, 2022, 35, 1582, 10, 561, 512, 2674, 329, 156, 50, 147, 1228, 264, 115, 9912, 2386, 201, 4448, 756, 23, 208, 2762, 9, 58, 42, 1003, 6, 272, 243

Offset: 0

Author

Antti Karttunen, Jan 10 2014

Keywords

• nonn

Comments

Let b(n)=a(n), but with instead of a(8)=3 and a(18)=4, define b(8)=4 and b(18)=3 (i.e. otherwise same, but the values in positions 8 and 18 are swapped). The sequence b is then a permutation induced when A234743 is restricted to primes, and the indices of the reordered primes are collected: We have A049084(A234743(A000040(n))) = b(n) for all n. Or in other words, the permutation b completely determines the permutation A234743, because the latter is multiplicative. See further comments there.

Links

• Antti Karttunen, Table of n, a(n) for n = 0..361
• Index entries for sequences that are permutations of the natural numbers

Crossrefs

Inverse permutation: A235048. Cf. A234840, A235199, A234743.

Programs

Scheme

(define (A235047 n) (A235199 (- (A234840 (+ n 1)) 1)))

Formula

a(n) = A235199(A234840(n+1)-1).