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A027160
a(n) = T(2n,n-2), T given by A027157.
0
5, 21, 176, 680, 5808, 21840, 190976, 708480, 6310400, 23220736, 209756160, 767676416, 7010676736, 25558732800, 235443322880, 855858053120, 7939647995904, 28796047982592, 268690773770240, 972740537352192, 9120760620646400
OFFSET
2,1
CROSSREFS
Sequence in context: A117067 A123334 A140196 * A195963 A119686 A241467
KEYWORD
nonn
STATUS
approved