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Search: id:A157905
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A157905 Triangle read by rows, T(n,k) = A000055(n-k) * (A157904 * 0^(n-k)) +0
3
1, 1, 1, 1, 1, 2, 1, 1, 2, 4, 2, 1, 2, 4, 8, 3, 2, 2, 4, 8, 17, 6, 3, 4, 4, 8, 17, 36, 11, 6, 6, 8, 8, 17, 36, 78, 23, 11, 12, 12, 16, 17, 36, 78, 170, 47, 23, 22, 24, 24, 34, 36, 78, 170, 375, 106, 47, 46, 44, 48, 51, 72, 78, 170, 375, 833 (list; table; graph; listen)
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Last modified December 7 23:50 EST 2009. Contains 170430 sequences.


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