



1, 2, 0, 3, 0, 1, 4, 0, 2, 1, 5, 0, 3, 2, 2, 6, 0, 4, 3, 4, 2, 7, 0, 5, 4, 6, 4, 4, 8, 0, 6, 5, 8, 6, 8, 4, 9, 0, 7, 6, 10, 8, 12, 8, 7, 10, 0, 8, 7, 12, 10, 16, 12, 14, 8
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OFFSET

0,2


COMMENTS

Row sums = A000070: (1, 2, 4, 7, 12, 19, 30, 45,...). Right border = A002865: (1, 0, 1, 1, 2, 2, 4, 4, 7, 8,...).


LINKS

Table of n, a(n) for n=0..54.


FORMULA

A000012 * A133734 as infinite lower triangular matrices.


EXAMPLE

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


CROSSREFS

Cf. A133734, A000070.
Sequence in context: A236138 A035614 A212138 * A238801 A095704 A163496
Adjacent sequences: A133732 A133733 A133734 * A133736 A133737 A133738


KEYWORD

nonn,tabl


AUTHOR

Gary W. Adamson, Sep 22 2007


STATUS

approved



