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A027311
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a(n) = Sum_{k=0..n-1} T(n,k) * T(n,k+3), with T given by A026323.
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0
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4, 43, 396, 3465, 29730, 253008, 2145968, 18184052, 154119660, 1307389666, 11104039000, 94441581936, 804428517984, 6862216318250, 58625961078432, 501592568400544, 4297633705136632, 36872583343109643, 316774930400206020
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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2,1
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Mar 23 2003
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STATUS
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approved
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