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A144733 Triangle read by rows, 2*A054533 - A054521 +0
1
1, -3, 2, -3, -3, 4, -1, -4, -1, 4, -3, -3, -3, -3, 8, 1, -2, -4, -2, 1, 4, -3, -3, -3, -3, -3, -3, 12, -1, 0, -1, -8, -1, 0, -1, 8, -1, -1, -6, -1, -1, -6, -1, -1, 12, 1, -2, 1, -2, -8, -2, 1, -2, 1, 8 (list; table; graph; listen)
OFFSET

1,2

COMMENT

Right border = A140434: (1, 2, 4, 4, 8, 4, 12,...).

Left border = A133695: (1, -3, -3, -1, -3, 1, -3, -1,...)

Row sums = A000010, with negative signs after the first 1: (1, -1, -2, -2, -4, -2, -6,...).

FORMULA

Triangle read by rows, 2*A054533 - A054521; as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle =

1;

-3, 2;

-3, -3, 4;

-1, -4, -1, 4;

-3, -3, -3, -3, 8;

1, -2, -4, -2, 1, 4;

-3, -3, -3, -3, -3, -3, 12;

-1, 0, -1, -8 -1, 0, -1, 8;

-1, -1, -6, -1, -1, -6, -1, -1, 12;

1, -2, 1, -2, -8, -2, 1, -2, 1, 8;

-3, -3, -3, -3, -3, -3, -3, -3, -3, -3, 20;

...

CROSSREFS

A054533, Cf. A054521, A140434, A133695

Sequence in context: A086920 A117451 A130970 this_sequence A091460 A035093 A061266

Adjacent sequences: A144730 A144731 A144732 this_sequence A144734 A144735 A144736

KEYWORD

tabl,sign

AUTHOR

Gary W. Adamson (qntmpkt(AT)yahoo.com), Sep 20 2008

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.


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