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A025138
a(n) = (1/2)*(3rd elementary symmetric function of C(n,0), C(n,1), ..., C(n,[ n/2 ])).
0
12, 25, 1155, 3136, 89012, 282339, 6356460, 22384516, 437787537, 1663878008, 29545748596, 119083774720, 1968978205492, 8317456369783
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OFFSET
4,1
LINKS
Table of n, a(n) for n=4..17.
CROSSREFS
Sequence in context:
A171069
A042193
A041286
*
A075689
A054303
A184826
Adjacent sequences:
A025135
A025136
A025137
*
A025139
A025140
A025141
KEYWORD
nonn
AUTHOR
Clark Kimberling
STATUS
approved
