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A027232
a(n) = Sum_{k=0..n-1} T(n,k) * T(n,k+1), with T given by A026758.
0
1, 4, 19, 72, 355, 1347, 6843, 26077, 135752, 519336, 2760110, 10591394, 57299551, 220393887, 1210772453, 4665698732, 25974365600, 100243916036, 564517479641, 2181476412875, 12407767954139, 48002072364351, 275392803316254, 1066512702720864, 6164746100658825, 23896975393255717
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
Table of n, a(n) for n=1..26.
CROSSREFS
Sequence in context: A268214 A027208 A085348 * A256714 A110688 A218920
Adjacent sequences: A027229 A027230 A027231 * A027233 A027234 A027235
KEYWORD
nonn
AUTHOR
Clark Kimberling
EXTENSIONS
More terms from Sean A. Irvine, Oct 24 2019
STATUS
approved

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Last modified November 15 11:55 EST 2024. Contains 377755 sequences.
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