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A131776 4*A065941 - 3*A049310. 5
1, 4, 1, 1, 4, 1, 4, -2, 8, 1, 1, 4, 3, 8, 1, 4, -5, 16, 0, 12, 1, 1, 4, 2, 16, 9, 12, 1, 4, -8, 24, -10, 40, 6, 16, 1, 1, 4, -2, 24, 15, 40, 19, 16, 1, 4, -11, 32, -32, 84, -3, 80, 16, 20, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row sums = A022095, a Fibonacci-like sequence starting (1, 5, 6, 11, 17, 28,...).

LINKS

Table of n, a(n) for n=1..55.

FORMULA

4*A065941 - 3*A049310 as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are:

1;

4, 1;

1, 4, 1;

4, -2, 8, 1;

1, 4, 3, 8, 1;

4, -5, 16, 0, 12, 1;

1, 4, 2, 16, 9, 12, 1;

...

CROSSREFS

Cf. A065941, A049310, A022095, A131774, A131775, A131777, A131778.

Sequence in context: A080278 A258328 A070085 * A010322 A299537 A053239

Adjacent sequences:  A131773 A131774 A131775 * A131777 A131778 A131779

KEYWORD

tabl,sign

AUTHOR

Gary W. Adamson, Jul 14 2007

STATUS

approved

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Last modified October 20 05:16 EDT 2018. Contains 316378 sequences. (Running on oeis4.)