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A134520 A007318 + A128174 - A000012 as infinite lower triangular matrices. 0
1, 0, 1, 1, 1, 1, 0, 3, 2, 1, 1, 3, 6, 3, 1, 0, 5, 9, 10, 4, 1, 1, 5, 15, 19, 15, 5, 1, 0, 7, 20, 35, 34, 21, 6, 1, 1, 7, 28, 55, 70, 55, 28, 7, 1, 1, 9, 35, 84, 125, 126, 83, 36, 8, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,8

COMMENTS

Row sums = A084174: (1, 1, 3, 6, 14, 29, 61,...).

LINKS

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

EXAMPLE

First few rows of the triangle are;

1;

0, 1;

1, 1, 1;

0, 3, 2, 1;

1, 3, 6, 3, 1;

0, 5, 9, 10, 4, 1;

1, 5, 15, 19, 15, 5, 1;

0, 7, 20, 35, 34, 21, 6, 1;

1, 7, 28, 55, 70, 55, 28, 7, 1;

...

CROSSREFS

Cf. A128174, A084174.

Sequence in context: A152176 A152175 A321620 * A188316 A197027 A143772

Adjacent sequences:  A134517 A134518 A134519 * A134521 A134522 A134523

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Oct 29 2007

STATUS

approved

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Last modified August 3 01:07 EDT 2021. Contains 346429 sequences. (Running on oeis4.)