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.

A152195 Triangle read by rows, A000012 * A152194.

Original entry on oeis.org

1, 2, 4, 1, 8, 4, 16, 11, 1, 32, 26, 6, 64, 57, 22, 1, 128, 120, 64, 8, 256, 247, 163, 37, 1, 512, 502, 382, 130, 10, 1024, 1013, 848, 386, 56, 1, 2048, 2036, 1816, 1024, 232, 12, 4096, 4083, 3797, 2510, 794, 79, 1
Offset: 0

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Author

Gary W. Adamson, Nov 28 2008

Keywords

Comments

Row sums = A045623: (1, 2, 5, 12, 28, 64, 144,...).

Examples

			First few rows of the triangle =
1;
2;
4, 1;
8, 4;
16, 11, 1;
32, 26, 6;
64, 57, 22, 1;
128, 120, 64, 8,
256, 247, 163, 37, 1;
512, 502, 382, 130, 10;
1024, 1013, 848, 386, 56, 1;
2048, 2036, 1816, 1024, 232, 12;
4096, 4083, 3797, 2510, 794, 79, 1;
...
		

Crossrefs

Formula

Triangle read by rows, A000012 * A152194; A000012 = an infinite lower triangular matrix with all 1's. The operation performs partial sums of A152194 column terms.
Equals binomial transform of [1; 1; 1,1; 1,1; 1,1,1; 1,1,1;...], (an infinite lower triangular matrix with one 1 in two rows, two 1's in two rows, three 1's in two rows, etc...).