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A108080 Sum [i=0..n, C(2n+i,n-i) ]. +0
1
1, 3, 12, 50, 211, 895, 3805, 16193, 68940, 293526, 1249622, 5318976, 22634700, 96296410, 409573584, 1741574006, 7403616923, 31466106703, 133704121665, 568008916093, 2412570019447, 10245302874071, 43500597657111 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Apparently a bisection of A026847.

Sequence in context: A037765 A037653 A092443 this_sequence A113441 A119976 A074547

Adjacent sequences: A108077 A108078 A108079 this_sequence A108081 A108082 A108083

KEYWORD

nonn

AUTHOR

Ralf Stephan, Jun 03 2005

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Last modified July 23 17:35 EDT 2008. Contains 142285 sequences.

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