cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A085391 Square array of centered numbers, read by antidiagonals.

Original entry on oeis.org

0, 1, 0, 1, 1, 0, 1, 3, 1, 0, 1, 4, 5, 1, 0, 1, 5, 10, 7, 1, 0, 1, 6, 15, 19, 9, 1, 0, 1, 7, 21, 35, 31, 11, 1, 0, 1, 8, 28, 56, 69, 46, 13, 1, 0, 1, 9, 36, 84, 126, 121, 64, 15, 1, 0, 1, 10, 45, 120, 210, 251, 195, 85, 17, 1, 0, 1, 11, 55, 165, 330, 462, 456, 295, 109, 19, 1, 0
Offset: 0

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Author

Paul Barry, Jul 02 2003

Keywords

Examples

			Rows begin
0 0 0 0 0 0 ...
1 1 1 1 1 1 ...
1 3 5 7 9 11 ...
1 4 10 19 31 46 ...
1 5 15 35 69 121...
		

Crossrefs

Formula

Square array T(n, k)=C(n+k, k)-C(n, k).
Row k has g.f. (1-x^k)/(1-x)^(k+1).
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