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.

A133085 A133084 * A000012.

Original entry on oeis.org

1, 3, 1, 6, 3, 1, 12, 8, 5, 1, 24, 19, 15, 5, 1, 48, 42, 37, 17, 7, 1, 96, 89, 83, 48, 28, 7, 1, 192, 184, 177, 121, 86, 30, 9, 1, 384, 375, 367, 283, 227, 101, 45, 9, 1, 768, 758, 749, 629, 545, 293, 167, 47, 11, 1
Offset: 1

Views

Author

Gary W. Adamson, Sep 08 2007

Keywords

Comments

Left column = A003945: (1, 3, 6, 12, 24, 48, ...). Row sums = A133086: (1, 4, 10, 26, 64, 152, ...).

Examples

			First few rows of the triangle are:
1;
3, 1;
6, 3, 1;
12, 8, 5, 1;
24, 19, 15, 5, 1;
48, 42, 37, 17, 7, 1;
96, 89, 83, 48, 28, 7, 1;
...
		

Crossrefs

Formula

A133084 * A000012 as infinite lower triangular matrices.

Extensions

a(28)=1 inserted by Georg Fischer, Oct 10 2021