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A032126 "BIK" (reversible, indistinct, unlabeled) transform of 1,2,3,4... 0
1, 3, 6, 15, 33, 84, 203, 525, 1330, 3465, 8955, 23400, 60957, 159471, 416702, 1090635, 2853229, 7469052, 19548759, 51177225, 133969386, 350730933, 918187991, 2403833040, 6293218393, 16475822139, 43134005238 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

LINKS

C. G. Bower, Transforms (2)

FORMULA

a(2n+1) = 1/2 * [F(4n+1) + F(4n) + F(2n+2) + F(2n)], with F(n) = A000045(n). - R. Stephan, May 04 2004

CROSSREFS

Sequence in context: A000599 A063832 A006647 * A190525 A032176 A173992

Adjacent sequences:  A032123 A032124 A032125 * A032127 A032128 A032129

KEYWORD

nonn

AUTHOR

Christian G. Bower (bowerc(AT)usa.net)

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Last modified February 16 06:46 EST 2012. Contains 205867 sequences.