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Search: id:A049617
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A049617 a(n)=Sum{((-1)^i)*T(i,2n-i): i=0,1,...,2n}, array T as in A049615. +0
1
0, 2, 5, 8, 13, 18, 23, 30, 39, 46, 55, 66, 75, 88, 101, 110, 127, 144, 157, 176, 193 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A004711 A000789 A076145 this_sequence A054074 A000982 A122221

Adjacent sequences: A049614 A049615 A049616 this_sequence A049618 A049619 A049620

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.

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