A066251 Inverse permutation to A066250.

1, 3, 2, 5, 4, 7, 6, 8, 10, 9, 12, 11, 16, 13, 18, 14, 22, 15, 28, 17, 30, 19, 36, 20, 40, 21, 42, 23, 46, 24, 52, 25, 58, 26, 60, 27, 66, 29, 70, 31, 72, 32, 78, 33, 82, 34, 88, 35, 96, 37, 100, 38, 102, 39, 106, 41, 108, 43, 112, 44, 126, 45, 130, 47, 136, 48, 138, 49, 148

Offset

1,2

Comments

Permutation of natural numbers.

Links

Table of n, a(n) for n=1..69.

Index entries for sequences that are permutations of the natural numbers

Formula

a(n) = (if n is odd then A000040((n+1)/2) else A002808(n/2)) - 1.

Crossrefs

Cf. A066250, A000040, A002808, A066248, A066255.

Sequence in context: A344548 A341903 A066250 * A114882 A306436 A355504

Adjacent sequences: A066248 A066249 A066250 * A066252 A066253 A066254

Keyword

nonn

Author

Reinhard Zumkeller, Dec 09 2001

Status

approved