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Search: id:A128142
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A128142 A128132 * A122432 (unsigned). +0
2
1, 5, 2, 15, 8, 3, 34, 21, 11, 4, 65, 44, 27, 14, 5, 111, 80, 54, 33, 17, 6, 175, 132, 95, 64, 39, 20, 7, 260, 203, 153, 110, 74, 45, 23, 8, 369, 296, 231, 174, 125, 84, 51, 26, 9, 505, 414, 332, 259, 195, 140, 94, 57, 29, 10 (list; table; graph; listen)
OFFSET

1,2

COMMENT

Row sums = A006325 starting (1, 7, 26, 70, 155,...) Left border = A006003: (1, 5, 15, 34, 65, 111,...) A128141 = A122432 * A128132

FORMULA

A128132 * A122432 (unsigned); as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are:

1;

5, 2;

15, 8, 3;

34, 21, 11, 4;

65, 44, 27, 14, 5;

111, 80, 54, 33, 17, 6;

175, 132, 95, 64, 39, 20, 7;

...

CROSSREFS

Cf. A128132, A122432, A006325, A128141, A006003.

Sequence in context: A158868 A104634 A060422 this_sequence A111267 A146343 A146363

Adjacent sequences: A128139 A128140 A128141 this_sequence A128143 A128144 A128145

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson (qntmpkt(AT)yahoo.com), Feb 16 2007

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.


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