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A138767
Triangle read by rows: T(n,k)=binom(n,k)*binom(2*n-2*k,n-1), n>=1, 0<=k<=floor(n/2+1/2).
+0
1
1, 1, 4, 4, 15, 18, 3, 56, 80, 24, 210, 350, 150, 10, 792, 1512, 840, 120, 3003, 6468, 4410, 980, 35, 11440, 27456, 22176, 6720, 560, 43758, 115830, 108108, 41580, 5670, 126, 167960, 486200, 514800, 240240, 46200, 2520
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.
AT&T Labs Research
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