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.

A153198 Triangle read by rows, T(n,k) = A006789(k) if (n=k) otherwise zero. = (A006789 * 0^(n-k)).

Original entry on oeis.org

1, 0, 1, 0, 0, 2, 0, 0, 0, 5, 0, 0, 0, 0, 14, 0, 0, 0, 0, 0, 43, 0, 0, 0, 0, 0, 0, 143, 0, 0, 0, 0, 0, 0, 0, 509, 0, 0, 0, 0, 0, 0, 0, 0, 1922
Offset: 0

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Author

Gary W. Adamson, Dec 20 2008

Keywords

Comments

Binomial transform of A153198 = triangle A153199 with row sums = A153197: (1, 2, 5, 15, 51, 189, 748,...).

Examples

			First few rows of the triangle =
1;
0, 1;
0, 0, 2;
0, 0, 0, 5;
0, 0, 0, 0, 14;
0, 0, 0, 0, 0, 43;
0, 0, 0, 0, 0, 0, 143;
0, 0, 0, 0, 0, 0, 0, 509;
...
		

Crossrefs

Formula

Triangle read by rows, T(n,k) = (A006789 * 0^(n-k)). Infinite lower triangular matrix with A006789: (1, 1, 2, 5, 14, 43, 143,...) as the main diagonal and the rest zeros.