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A066251 Inverse permutation to A066250. 3
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 (list; graph; refs; listen; history; text; internal format)
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: A301941 A135762 A066250 * A114882 A004442 A065190

Adjacent sequences:  A066248 A066249 A066250 * A066252 A066253 A066254

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Dec 09 2001

STATUS

approved

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Last modified January 17 16:11 EST 2019. Contains 319235 sequences. (Running on oeis4.)