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A110770 Triangle read by rows: T(n,k)=binom(t(n)-t(k-1),k), where t(j)=j(j+1)/2; 1<=k<=n. +0
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1, 3, 1, 6, 10, 1, 10, 36, 35, 1, 15, 91, 220, 126, 1, 21, 190, 816, 1365, 462, 1, 28, 351, 2300, 7315, 8568, 1716, 1, 36, 595, 5456, 27405, 65780, 54264, 6435, 1, 45, 946, 11480, 82251, 324632, 593775, 346104, 24310, 1, 55, 1431, 22100, 211876, 1221759 (list; table; graph; listen)
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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.


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