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A026997
a(n) = Sum_{k=0..n-1} T(n,k) * T(n,k+1), with T given by A026703.
0
1, 6, 35, 168, 926, 4294, 23224, 106690, 571926, 2617886, 13965688, 63815684, 339452265, 1549699466, 8228066295, 37543939462, 199095075169, 908167940082, 4812012405883, 21945589904716, 116213845733553, 529936445158768, 2805163046954295, 12790521159853090, 67685654170211481
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
Table of n, a(n) for n=1..25.
CROSSREFS
Sequence in context: A375248 A030532 A333800 * A014337 A002041 A103995
Adjacent sequences: A026994 A026995 A026996 * A026998 A026999 A027000
KEYWORD
nonn
AUTHOR
Clark Kimberling
EXTENSIONS
More terms from Sean A. Irvine, Oct 21 2019
STATUS
approved

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Last modified October 21 09:02 EDT 2024. Contains 376980 sequences.
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