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A129687 A129686 * A007318. 1
1, 1, 1, 2, 2, 1, 2, 4, 3, 1, 2, 6, 7, 4, 1, 2, 8, 13, 11, 5, 1, 2, 10, 21, 24, 16, 6, 1, 2, 12, 31, 45, 40, 22, 7, 1, 2, 14, 43, 76, 85, 62, 29, 8, 1, 2, 16, 57, 119, 161, 147, 91, 37, 9, 1 (list; table; graph; refs; listen; history; internal format)
OFFSET

1,4

COMMENTS

Row sums = A084215: (1, 2, 5, 10, 20, 40, 80,...). A007318 * A129686 = A124725.

FORMULA

A129686 * A007318 (Pascal's Triangle), as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are:

1;

1, 1;

2, 2, 1;

2, 4, 3, 1;

2, 6, 7, 4, 1;

2, 8, 13, 11, 5, 1;

2, 10, 21, 24, 16, 6, 1;

2, 12, 31, 45, 40, 22, 7, 1;

...

CROSSREFS

Cf. A129686, A007318, A124725.

Sequence in context: A144925 A029262 A193292 * A128176 A144963 A035374

Adjacent sequences:  A129684 A129685 A129686 * A129688 A129689 A129690

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson (qntmpkt(AT)yahoo.com), Apr 28 2007

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Last modified February 17 10:05 EST 2012. Contains 206009 sequences.