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Search: id:A048113
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| A048113 |
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Triangular array T read by rows: T(h,k)=number of paths consisting of steps from (1,1) to (h,k) such that each step has length 1 directed up or right and each vertex (i,j) satisfies i/2<=j<=2i, for h=0,1,2,... and k=0,1,2,... |
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9
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| 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 2, 0, 0, 0, 0, 2, 2, 0, 0, 0, 0, 2, 4, 2, 0, 0, 0, 0, 0, 6, 6, 0, 0, 0, 0, 0, 0, 6, 12, 6, 0, 0, 0, 0, 0, 0, 6, 18, 18, 6, 0, 0, 0, 0, 0, 0, 0, 24, 36, 24, 0, 0, 0, 0, 0, 0, 0, 0, 24, 60, 60, 24, 0, 0, 0, 0, 0, 0, 0, 0, 24, 84
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