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A128971 A130125 * A000012. 0
1, 2, 2, 5, 4, 4, 10, 10, 8, 8, 21, 20, 20, 16, 16, 42, 42, 40, 40, 32, 32, 85, 84, 84, 80, 80, 64, 64, 170, 170, 168, 168, 160, 160, 128 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Left column = A000975: (1, 2, 5, 10, 21, 42,...). Row sums = A102301: (1, 4, 13, 36, 93,...). A130127 = A000012 * A130125.

LINKS

Table of n, a(n) for n=0..34.

FORMULA

A130125 * A000012 as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are:

1;

2, 2;

5, 4, 4;

10, 10, 8, 8;

21, 20, 20, 16, 16;

42, 42, 40, 40, 32, 32;

85, 84, 84, 80, 80, 64, 64;

...

CROSSREFS

Cf. A000975, A102301, A130127, A000012, A130125.

Sequence in context: A249620 A025498 A193693 * A292245 A206427 A335690

Adjacent sequences:  A128968 A128969 A128970 * A128972 A128973 A128974

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, May 11 2007

STATUS

approved

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Last modified October 28 10:14 EDT 2020. Contains 338053 sequences. (Running on oeis4.)