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A131035 A051340 * A129686. 0
1, 2, 1, 4, 1, 1, 5, 2, 1, 1, 6, 2, 2, 1, 1, 7, 2, 2, 2, 1, 1, 8, 2, 2, 2, 2, 1, 1, 9, 2, 2, 2, 2, 2, 1, 1, 10, 2, 2, 2, 2, 2, 2, 1, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row sums = A008486: (1, 3,6, 9, 12, 15, 18,...). a131034 = A129686 * A051340

LINKS

Table of n, a(n) for n=1..45.

FORMULA

A051340 * A129686 as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are:

1;

2, 1;

4, 1, 1;

5, 2, 1, 1;

6, 2, 2, 1, 1;

7, 2, 2, 2, 1, 1;

8, 2, 2, 2, 2, 1, 1;

9, 2, 2, 2, 2, 2, 1, 1;

10, 2, 2, 2, 2, 2, 2, 1, 1;

...

CROSSREFS

Cf. A051340, A129686, A008486.

Sequence in context: A162944 A140582 A062866 * A118745 A235671 A131034

Adjacent sequences:  A131032 A131033 A131034 * A131036 A131037 A131038

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Jun 10 2007

STATUS

approved

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Last modified September 21 07:06 EDT 2020. Contains 337267 sequences. (Running on oeis4.)