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A132108 A007318 + A002024 - A002260 as infinite lower triangular matrices. +0
2
1, 2, 1, 3, 3, 1, 4, 5, 4, 1, 5, 7, 8, 5, 1, 6, 9, 13, 12, 6, 1, 7, 11, 19, 23, 17, 7, 1, 8, 13, 26, 39, 38, 23, 8, 1, 9, 15, 34, 61, 74, 59, 30, 9, 1, 10, 17, 43, 90, 131, 130, 87, 38, 10, 1 (list; table; graph; listen)
OFFSET

0,2

COMMENT

Row sums = A132109: (1, 3, 7, 14, 26, 47, 85,...).

EXAMPLE

First few rows of the triangle are:

1;

2, 1;

3, 3, 1;

4, 5, 4, 1;

5, 7, 8, 5, 1;

6, 9, 13, 12, 6, 1;

7, 11, 19, 23, 17, 7, 1;

...

CROSSREFS

Cf. A007318, A002024, A002260, A132109.

Sequence in context: A117895 A128139 A104732 this_sequence A125175 A073020 A090349

Adjacent sequences: A132105 A132106 A132107 this_sequence A132109 A132110 A132111

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson (qntmpkt(AT)yahoo.com), Aug 09 2007

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.


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