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A027225
a(n) = Sum_{k=0..n-2} T(n,k) * T(n,k+2), with T given by A026747.
0
1, 8, 52, 247, 1416, 6056, 33731, 139016, 770116, 3121259, 17335095, 69642995, 388958218, 1554558921, 8740670953, 34818606079, 197136480944, 783522002716, 4466326137854, 17722654061673, 101674164224552, 402960855102206, 2325563749837462, 9208279020729297, 53433859702165884
(list; graph; refs; listen; history; text; internal format)
OFFSET
2,2
LINKS
Table of n, a(n) for n=2..26.
CROSSREFS
Sequence in context: A303509 A107584 A323940 * A073377 A055283 A193427
Adjacent sequences: A027222 A027223 A027224 * A027226 A027227 A027228
KEYWORD
nonn
AUTHOR
Clark Kimberling
EXTENSIONS
More terms from Sean A. Irvine, Oct 24 2019
STATUS
approved

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Last modified September 30 11:58 EDT 2024. Contains 376331 sequences.
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