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A066249
Inverse permutation to A066248.
3
3, 1, 5, 2, 7, 4, 8, 6, 9, 10, 11, 12, 13, 16, 14, 18, 15, 22, 17, 28, 19, 30, 20, 36, 21, 40, 23, 42, 24, 46, 25, 52, 26, 58, 27, 60, 29, 66, 31, 70, 32, 72, 33, 78, 34, 82, 35, 88, 37, 96, 38, 100, 39, 102, 41, 106, 43, 108, 44, 112, 45, 126, 47, 130, 48, 136, 49, 138, 50
OFFSET
1,1
COMMENTS
Permutation of natural numbers.
FORMULA
a(n) = (if n is even then A000040(n/2) else A002808((n+1)/2)) - 1.
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Dec 09 2001
STATUS
approved