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Search: id:A049640
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A049640 a(n)=Sum{T(i,n-i): i=0,1,...,n), array T as in A049639. +0
1
0, 0, 2, 4, 7, 10, 15, 20, 27, 34, 45, 56, 69, 82, 101, 120, 143, 166, 195, 224, 257, 290, 333, 376, 423, 470, 529, 588, 653, 718, 791, 864, 945, 1026, 1123, 1220, 1323, 1426, 1547, 1668, 1797 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Sequence in context: A022939 A036702 A007983 this_sequence A024668 A160790 A000376

Adjacent sequences: A049637 A049638 A049639 this_sequence A049641 A049642 A049643

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified November 22 15:28 EST 2009. Contains 167310 sequences.

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