A332990 - OEIS

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A332990

Inverse of permutation in A332977.

1, 2, 3, 4, 5, 6, 9, 7, 8, 10, 17, 11, 33, 18, 12, 13, 65, 14, 129, 19, 20, 34, 257, 21, 15, 66, 16, 35, 513, 22, 1025, 23, 36, 130, 24, 25, 2049, 258, 67, 37, 4097, 38, 8193, 68, 26, 514, 16385, 39, 27, 28, 131, 132, 32769, 29, 40, 69, 259, 1026, 65537, 41

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OFFSET

1,2

COMMENTS

Permutation of the natural numbers A000027 with fixed points 1, 2, 3, 4, 5, 6, 10, ... and inverse permutation A332977 (with offset 1).

LINKS

Alois P. Heinz, Table of n, a(n) for n = 1..20000

Index entries for sequences that are permutations of the natural numbers

FORMULA

a(p) = 1 + 2^(pi(p)-1) = A094373(A000720(p)) for prime p.

CROSSREFS

Cf. A000027, A000040, A000720 (pi), A094373, A332977.