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A027323 a(n) = Sum_{k=0..m} T(n,k) * T(n,k+1), where m=0 for n=1; m=n for n >= 2; and T is given by A026120. 0
1, 5, 38, 281, 2116, 16222, 126244, 994860, 7923456, 63679869, 515810606, 4206733157, 34515110876, 284699216035, 2359535370142, 19638957026491, 164089666469232, 1375812276097887, 11572233529290882, 97619679434165691, 825688568949199356, 7001040129052461912 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
CROSSREFS
Sequence in context: A279265 A129048 A279489 * A110079 A110082 A073508
KEYWORD
nonn
AUTHOR
EXTENSIONS
More terms from Sean A. Irvine, Oct 27 2019
STATUS
approved

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Last modified February 22 12:59 EST 2024. Contains 370255 sequences. (Running on oeis4.)