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A132729 2*A132044 - A000012. 1
1, 1, 1, 1, 1, 1, 1, 3, 3, 1, 1, 5, 9, 5, 1, 1, 7, 17, 17, 7, 1, 1, 9, 27, 37, 27, 9, 1, 1, 11, 39, 67, 67, 39, 11, 1, 1, 13, 53, 109, 137, 109, 53, 13, 1, 1, 15, 69, 165, 249, 249, 165, 69, 15, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,8

COMMENTS

Row sums = A132730: (1, 2, 3, 8, 21, 50, 111, 236, 489,...).

LINKS

Table of n, a(n) for n=0..54.

FORMULA

2*A132044 - A000012 as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are:

1;

1, 1;

1, 1, 1;

1, 3, 3, 1;

1, 5, 9, 5, 1;

1, 7, 17, 17, 7, 1;

1, 9, 27, 37, 26, 9, 1;

1, 11, 39, 67, 67, 39, 11, 1;

...

CROSSREFS

Cf. A132044, A132730, A007318.

Sequence in context: A056611 A177407 A135669 * A196493 A251634 A196989

Adjacent sequences:  A132726 A132727 A132728 * A132730 A132731 A132732

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Aug 26 2007

STATUS

approved

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Last modified October 22 17:39 EDT 2019. Contains 328319 sequences. (Running on oeis4.)