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A140581 Triangle read by rows, A054525 * A140256. +0
4
1, 1, 1, 2, 0, 1, 0, 1, 0, 1, 4, 0, 0, 0, 1, -3, 2, 1, 0, 0, 1, 6, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 2, 0, 0, 0, 0, 0, 1, -5, 4, 0, 0, 1, 0, 0, 0, 0, 1, 10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, -3, 0, 20, 1, 0, 0, 0, 0, 0, 1, 12, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, -7, 6, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1 (list; table; graph; listen)
OFFSET

1,4

COMMENT

Row sums = A014963: (1, 2, 3, 2, 5, 1, 7, 2, 3, 1, 11, 1, 13, 1,...).

FORMULA

Mobius transform of triangle A140256 = A054525 * A140256; as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are:

1;

1, 1;

2, 0, 1;

0, 1, 0, 1;

4, 0, 0, 0, 1;

-3, 2, 1, 0, 0, 1;

6, 0, 0, 0, 0, 0, 1;

0, 0, 0, 1, 0, 0, 0, 1;

0, 0, 2, 0, 0, 0, 0, 0, 1;

...

CROSSREFS

Cf. A140256, A054525.

Adjacent sequences: A140578 A140579 A140580 this_sequence A140582 A140583 A140584

Sequence in context: A083889 A127523 A116927 this_sequence A137277 A039975 A016253

KEYWORD

tabl,sign

AUTHOR

Gary W. Adamson and Mats Granvik (qntmpkt(AT)yahoo.com), May 17 2008

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Last modified October 6 16:13 EDT 2008. Contains 144667 sequences.


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