



1, 3, 2, 4, 0, 3, 7, 5, 0, 4, 6, 0, 0, 0, 5, 12, 6, 7, 0, 0, 6, 8, 0, 0, 0, 0, 0, 7, 15, 10, 0, 9, 0, 0, 0, 8, 13, 0, 8, 0, 0, 0, 0, 0, 9, 18, 8, 0, 0, 11, 0, 0, 0, 0, 10
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OFFSET

1,2


COMMENTS

Left border = Sigma(n), A000203: (1, 3, 4, 7, 6, 12, 8,...). A129236 = Moebius transform of A129234.


LINKS

Table of n, a(n) for n=1..55.


FORMULA

A051731 * A129234 as infinite lower triangular matrices.


EXAMPLE

First few rows of the triangle are:
1;
3, 2;
4, 0, 3;
7, 5, 0, 4;
6, 0, 0, 0, 5;
12, 6, 7, 0, 0, 6;
8, 0, 0, 0, 0, 0, 7;
15, 10, 0, 9, 0, 0, 0, 8;
...


CROSSREFS

Cf. A129234, A129235, A129236, A054525, A051731, A000203.
Sequence in context: A070471 A070690 A160387 * A127099 A004545 A127481
Adjacent sequences: A129234 A129235 A129236 * A129238 A129239 A129240


KEYWORD

nonn,tabl


AUTHOR

Gary W. Adamson, Apr 05 2007


STATUS

approved



