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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
OFFSET
4,1
CROSSREFS
Sequence in context: A171069 A042193 A041286 * A075689 A054303 A184826
KEYWORD
nonn
STATUS
approved