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A128260

1, 2, 1, 3, 2, 1, 4, 1, 3, 1, 5, 4, 0, 4, 1, 6, 1, 1, 0, 5, 1, 7, 6, 6, 0, 0, 6, 1, 8, 1, 0, 1, 0, 0, 7, 1, 9, 8, 1, 8, 0, 0, 0, 8, 1, 10, 1, 9, 0, 1, 0, 0, 0, 9, 1

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OFFSET

1,2

COMMENTS

Row sums = A128261: (1, 3, 6, 9, 14, 14, 26, 18, 35, 31, ...).

LINKS

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

EXAMPLE

First few rows of the triangle:

2, 1;

3, 2, 1;

4, 1, 3, 1;

5, 4, 0, 4, 1;

6, 1, 1, 0, 5, 1;

7, 6, 6, 0, 0, 6, 1;

8, 1, 0, 1, 0, 0, 7, 1;

...

CROSSREFS

Cf. A128229, A051731, A128261, A128259.

Sequence in context: A138530 A002341 A348888 * A083368 A112379 A361101

Adjacent sequences: A128257 A128258 A128259 * A128261 A128262 A128263

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Feb 21 2007

STATUS

approved

URL: https://oeis.org/A128260

⇱ A128260 - OEIS