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A027985
a(n) = Sum{T(n,k)*T(n,k+1)}, 0<=k<=2n-1, T given by A027960.
0
6, 35, 144, 564, 2186, 8468, 32856, 127729, 497454, 1940525, 7580656, 29651385, 116111194, 455138499, 1785707924, 7011933544, 27554583254, 108355491404, 426368213364, 1678704356644, 6613026412314, 26064305550054, 102777232982624
OFFSET
1,1
CROSSREFS
Sequence in context: A089581 A132657 A161784 * A078799 A203288 A026957
KEYWORD
nonn
STATUS
approved