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A027212
a(n) = Sum_{k=0..n} (k+1) *
A026725
(n, n-k).
1
1, 3, 8, 23, 55, 144, 328, 816, 1808, 4358, 9485, 22377, 48097, 111720, 237917, 546161, 1154827, 2626624, 5522464, 12467540, 26092324, 58546544, 122059348, 272479782, 566242186, 1258568324, 2608232758, 5775620396, 11940756076
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OFFSET
0,2
LINKS
Table of n, a(n) for n=0..28.
MAPLE
A027212
:= proc(n)
add( (k+1)*
A026725
(n, n-k), k=0..n) ;
end proc: #
R. J. Mathar
, Oct 21 2019
CROSSREFS
Sequence in context:
A296286
A068602
A255834
*
A027236
A353169
A027244
Adjacent sequences:
A027209
A027210
A027211
*
A027213
A027214
A027215
KEYWORD
nonn
AUTHOR
Clark Kimberling
EXTENSIONS
Name corrected by
R. J. Mathar
, Oct 21 2019
STATUS
approved
