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A026962 a(n) = Sum_{k=0..n-1} T(n,k) * T(n,k+1), with T given by A026626. 0
1, 6, 24, 108, 406, 1572, 5961, 22788, 87209, 335010, 1290376, 4983162, 19286891, 74797176, 290586771, 1130716508, 4406049037, 17191077082, 67152699384, 262594530318, 1027851765350, 4026831276662, 15788979175102, 61954847930374, 243278117470476, 955907159445522 (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: A344274 A122740 A034432 * A026972 A075484 A122739

Adjacent sequences:  A026959 A026960 A026961 * A026963 A026964 A026965

KEYWORD

nonn

AUTHOR

Clark Kimberling

EXTENSIONS

More terms from Sean A. Irvine, Oct 20 2019

STATUS

approved

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Last modified October 22 23:22 EDT 2021. Contains 348182 sequences. (Running on oeis4.)