A105081 - OEIS

A105081

a(n) = 1 + A003188(n - 1), n >= 1.

1, 2, 4, 3, 7, 8, 6, 5, 13, 14, 16, 15, 11, 12, 10, 9, 25, 26, 28, 27, 31, 32, 30, 29, 21, 22, 24, 23, 19, 20, 18, 17, 49, 50, 52, 51, 55, 56, 54, 53, 61, 62, 64, 63, 59, 60, 58, 57, 41, 42, 44, 43, 47, 48, 46, 45, 37, 38, 40, 39, 35, 36, 34, 33, 97, 98, 100, 99, 103, 104, 102

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OFFSET

1,2

COMMENTS

A permutation of the natural numbers.

LINKS

Ivan Neretin, Table of n, a(n) for n = 1..8192

Index entries for sequences that are permutations of the natural numbers

FORMULA

a(1) = 1, a(2^k + j) = 2^k + a(2^k - j + 1) for 1 <= j <= 2^k.

A000069(a(n)) = A065621(n).

As a composition of related permutations: