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.

A153864 Triangle read by rows, A000012 * A153860 * (A066983 * 0^(n-k)).

Original entry on oeis.org

1, 1, 1, 2, 2, 1, 1, 2, 2, 3, 2, 2, 2, 6, 3, 1, 2, 2, 6, 6, 7, 2, 2, 2, 6, 6, 14, 9, 1, 2, 2, 6, 6, 14, 18, 17, 2, 2, 2, 6, 6, 14, 18, 34, 25, 1, 2, 2, 6, 6, 14, 18, 34, 50, 43, 2, 2, 2, 6, 6, 14, 18, 34, 50, 86, 67
Offset: 0

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Author

Gary W. Adamson, Jan 03 2009

Keywords

Comments

Row sums = A066629: (1, 2, 5, 8, 15, 24, 41, 66, 109,...).
Right border = A066983: (1, 1, 1, 3, 3, 7, 9, 17,...).

Examples

			First few rows of the triangle =
1;
1, 1;
2, 2, 1;
1, 2, 2, 3;
2, 2, 2, 6, 3;
1, 2, 2, 6, 6, 7;
2, 2, 2, 6, 6, 14, 9;
1, 2, 2, 6, 6, 14, 18, 17;
2, 2, 2, 6, 6, 14, 18, 34, 25;
1, 2, 2, 6, 6, 14, 18, 34, 50, 43;
...
		

Crossrefs

Formula

Triangle read by rows, A000012 * A153860 * (A066983 * 0^(n-k))
Given triangle A000012 * A153860 = partial sums of A153860 starting from the top.
(A066983 * 0^n-k) = an infinite lower triangular matrix with A066983 as the
main diagonal: (1, 1, 1, 3, 3, 7, 9, 17, 25,...) and the rest zeros.