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Revision History for A131335 (Underlined text is an addition; strikethrough text is a deletion.)

Showing all changes.
A131335 A000012 * A131334.
(history; published version)
#2 by Russ Cox at Fri Mar 30 17:25:22 EDT 2012
AUTHOR

_Gary W. Adamson (qntmpkt(AT)yahoo.com), _, Jun 29 2007

Discussion
Fri Mar 30 17:25
OEIS Server: https://oeis.org/edit/global/135
#1 by N. J. A. Sloane at Sat Nov 10 03:00:00 EST 2007
NAME

A000012 * A131334.

DATA

1, 1, 1, 2, 1, 1, 2, 2, 2, 1, 3, 2, 4, 2, 1, 3, 3, 6, 4, 3, 1, 4, 3, 9, 6, 7, 3, 1, 4, 4, 12, 9, 13, 7, 4, 1, 5, 4, 16, 12, 22, 13, 11, 4, 1, 5, 5, 20, 16, 34, 22, 24, 11, 5, 1

OFFSET

1,4

COMMENTS

Row sums = A000071, Fibonacci numbers - 1, starting (1, 2, 4, 7, 12, 20, 33,...).

FORMULA

A000012 * A131334 as infinite lower triangular matrices, where A000012 = (1; 1,1; 1,1,1;...).

EXAMPLE

First few rows of the triangle are:

1;

1, 1;

2, 1, 1;

2, 2, 2, 1;

3, 2, 4, 2, 1;

3, 3, 6, 4, 3, 1;

4, 3, 9, 6, 7, 3, 1;

...

CROSSREFS

Cf. A000071, A131334, A000012, A131332, A131333.

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson (qntmpkt(AT)yahoo.com), Jun 29 2007

STATUS

approved

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Last modified August 30 13:06 EDT 2024. Contains 375543 sequences. (Running on oeis4.)