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A144824 Triangle read by rows, A054533 * A127648 3
1, -1, 2, -1, -2, 6, 0, -4, 0, 8, -1, -2, -3, -4, 20, 1, -2, -6, -4, 5, 12, -1, -2, -3, -4, -5, -6, 42, 0, 0, 0, -16, 0, 0, 0, 32, 0, 0, -9, 0, 0, -18, 0, 0, 54, 1, -2, 3, -4, -20, -6, 7, -8, 9, 40, -1, -2, -3, -4, -5, -6, -7, -8, -9, -10, 110 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Row sums = A023896: (1, 1, 3, 4, 10, 16, 21,...).

Right border = A002618: (1, 2, 6, 8, 20, 12,...).

Left border = mu(n), A008683

LINKS

Table of n, a(n) for n=1..66.

FORMULA

Triangle read by rows, A054533 * A127648. The operation is equivalent to taking termwise products of row A054533 terms and the natural numbers.

EXAMPLE

Triangle A054533 starts:

1;

-1, 1;

-1, -1, 2;Q 0, -2, 0, 2;Q ...

The first few rows of triangle A144824 =

1;

-1, 2;

-1, -2, 6;

0, -4, 0, 8;

-1, -2, -3, -4, 20;

1, -2, -6, -4, 5, 12;

-1, -2, -3, -4, -5, -6, 42;

...

CROSSREFS

A054533, Cf. A023896, A002618, A008683.

Sequence in context: A032238 A000619 A006602 * A144358 A049404 A159885

Adjacent sequences:  A144821 A144822 A144823 * A144825 A144826 A144827

KEYWORD

tabl,sign

AUTHOR

Gary W. Adamson, Sep 21 2008

STATUS

approved

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Last modified February 17 10:59 EST 2019. Contains 320219 sequences. (Running on oeis4.)