The On-Line Encyclopedia of Integer Sequences (OEIS)

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Revision History for A131034

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A131034

A129686 * A051340.
(history; published version)

#4 by Jon E. Schoenfield at Mon Feb 21 00:20:06 EST 2022

STATUS

editing

approved

#3 by Jon E. Schoenfield at Mon Feb 21 00:20:04 EST 2022

COMMENTS

Row sums = A113127: (1, 3, 6, 10, 14, 18, 22, ...).

EXAMPLE

First few rows of the triangle are:

1;

2, 1;

4, 1, 1;

6, 2, 1, 1;

8, 2, 2, 1, 1;

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

...

STATUS

approved

editing

#2 by Russ Cox at Fri Mar 30 17:25:21 EDT 2012

AUTHOR

_Gary W. Adamson (qntmpkt(AT)yahoo.com), _, Jun 10 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

A129686 * A051340.

DATA

1, 2, 1, 4, 1, 1, 6, 2, 1, 1, 8, 2, 2, 1, 1, 10, 2, 2, 2, 1, 12, 2, 2, 2, 2, 1, 1, 14, 2, 2, 2, 2, 2, 1, 1, 16, 2, 2, 2, 2, 2, 2, 1, 1

OFFSET

0,2

COMMENTS

Row sums = A113127: (1, 3, 6, 10, 14, 18, 22,...).

FORMULA

A129686 * A051340 as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are:

1;

2, 1;

4, 1, 1;

6, 2, 1, 1;

8, 2, 2, 1, 1;

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

...

CROSSREFS

Cf. A129686, A051340, A113127.

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson (qntmpkt(AT)yahoo.com), Jun 10 2007

STATUS

approved