The On-Line Encyclopedia of Integer Sequences (OEIS)

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A131398

3*A007318 - A097806 - A000012.
(history; published version)

#2 by Russ Cox at Fri Mar 30 17:25:22 EDT 2012

AUTHOR

_Gary W. Adamson (qntmpkt(AT)yahoo.com), _, Jul 05 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

3*A007318 - A097806 - A000012.

DATA

1, 1, 1, 2, 4, 1, 2, 8, 7, 1, 2, 11, 17, 10, 1, 2, 14, 29, 29, 13, 1, 2, 17, 44, 59, 44, 16, 1, 2, 20, 62, 104, 104, 62, 19, 1, 2, 23, 83, 167, 209, 167, 83, 22, 1, 2, 26, 107, 251, 377, 377, 251, 107, 25, 1

OFFSET

0,4

COMMENTS

Row sums = A077802, (1, 2, 7, 18, 41, 88,...).

FORMULA

3*A007318 - A097806 - A000012 as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are:

1;

1, 1;

2, 4, 1;

2, 8, 7, 1;

2, 11, 17, 10, 1;

2, 14, 29, 29, 13, 1;

...

CROSSREFS

Cf. A007318, A097806, A000012, A077802.

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson (qntmpkt(AT)yahoo.com), Jul 05 2007

STATUS

approved