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A131778 6*A065941 - 5*A049310. 4
1, 6, 1, 1, 6, 1, 6, -4, 12, 1, 1, 6, 3, 12, 1, 6, -9, 24, -2, 18, 1, 1, 6, 0, 24, 11, 18, 1, 6, -14, 36, -20, 60, 6, 24, 1, 1, 6, -8, 36, 15, 60, 25, 24, 1, 6, -19, 48, -58, 126, -15, 120, 20, 30, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row sums = A022097, a Fibonacci-like sequence starting (1, 7, 8, 15, 23, 38,...).

LINKS

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

FORMULA

6*A065941 - 5*A049310 as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are;

1;

6, 1;

1, 6, 1;

6, -4, 12, 1;

1, 6, 3, 12, 1;

6, -9 24, -2, 18, 1;

1, 6, 0, 24, 11, 18, 1;

...

CROSSREFS

Cf. A065941, A049310, A099097, A131774, A131775, A131776, A131777.

Sequence in context: A182429 A195385 A138073 * A095713 A138072 A176348

Adjacent sequences:  A131775 A131776 A131777 * A131779 A131780 A131781

KEYWORD

tabl,sign

AUTHOR

Gary W. Adamson, Jul 14 2007

STATUS

approved

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Last modified April 18 19:30 EDT 2014. Contains 240733 sequences.