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A097207 Triangle read by rows: T(n,k) = binomial(n,k) + 2*binomial(n,k-1). +0
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1, 1, 3, 1, 4, 5, 1, 5, 9, 7, 1, 6, 14, 16, 9, 1, 7, 20, 30, 25, 11, 1, 8, 27, 50, 55, 36, 13, 1, 9, 35, 77, 105, 91, 49, 15, 1, 10, 44, 112, 182, 196, 140, 64, 17, 1, 11, 54, 156, 294, 378, 336, 204, 81, 19, 1, 12, 65, 210, 450, 672, 714, 540, 285, 100, 21, 1, 13, 77, 275, 660 (list; table; graph; listen)
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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.


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