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A157030 Triangle read by rows, A156834 * A054521 1
1, 2, 0, 2, 1, 0, 4, 0, 1, 0, 2, 1, 1, 1, 0, 8, 3, 0, 0, 1, 0, 2, 1, 1, 1, 1, 1, 0, 10, 0, 5, 0, 1, 0, 1, 0, 8, 7, 0, 1, 1, 0, 1, 1, 0, 12, 5, 6, 5, 0, 0, 10, 1, 0, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 34, 10, 10, 0, 7, 0, 10, 0, 0, 1, 0 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Left border = A157019: (1, 2, 2, 4, 2, 8, 2, 10,...).

LINKS

Table of n, a(n) for n=1..76.

FORMULA

Triangle read by rows, A156834 * A054521; as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle =

1;

2, 0;

2, 1, 0;

4, 0, 1, 0;

2, 1, 1, 1, 0;

8, 3, 0, 0, 1, 0;

2, 1, 1, 1, 1, 1, 0;

10, 0, 5, 0, 1, 0, 1, 0;

8, 7, 0, 1, 1, 0, 1, 1, 0;

12, 5, 6, 5, 0, 0, 10, 1, 0;

2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0;

34, 10, 10, 0, 7, 0, 1, 0, 0, 0, 1, 0;

2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0;

...

CROSSREFS

Cf. A156834 (row sums), A054521.

Sequence in context: A177446 A074905 A058548 * A080844 A321428 A336167

Adjacent sequences:  A157027 A157028 A157029 * A157031 A157032 A157033

KEYWORD

nonn,tabl,more

AUTHOR

Gary W. Adamson and Mats Granvik, Feb 21 2009

STATUS

approved

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Last modified December 9 03:42 EST 2021. Contains 349625 sequences. (Running on oeis4.)