

A134839


Triangle, nth row = first n terms in nth row of an array formed by A051731 * A126988(transform).


1



1, 1, 3, 1, 2, 4, 1, 3, 3, 7, 1, 2, 3, 4, 6, 1, 3, 4, 6, 5, 12, 1, 2, 3, 4, 5, 6, 8, 1, 3, 3, 7, 5, 9, 7, 15, 1, 2, 4, 4, 5, 8, 7, 8, 13, 1, 3, 3, 6, 6, 9, 7, 12, 9, 18
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OFFSET

1,3


COMMENTS

Right border = sigma(n), A000203: (1, 3, 4, 7, 6, 12, ...).
Row sums = A007437: (1, 4, 7, 14, 16, 31, 29, 50, ...).


LINKS



FORMULA

Given the array formed by A051731 * A126988(transform), the triangle by rows = first n terms of nth row of the array.


EXAMPLE

First few rows of the array:
1, 2, 3, 4, 5, 6, 7, ...
1, 3, 3, 6, 5, 9, 7, ...
1, 2, 4, 4, 5, 8, 7, ...
1, 3, 3, 7, 5, 9, 7, ...
1, 2, 3, 4, 6, 6, 7, ...
1, 3, 4, 6, 5, 12, 7, ...
...
First few rows of the triangle:
1;
1, 3;
1, 2, 4;
1, 3, 3, 7;
1, 2, 3, 4, 6;
1, 3, 4, 6, 5, 12;
1, 2, 3, 4, 5, 6, 8;
...


CROSSREFS



KEYWORD



AUTHOR



STATUS

approved



