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A129236 A054525 * A129234. 3
1, 1, 2, 2, 0, 3, 2, 1, 0, 4, 4, 0, 0, 0, 5, 2, 2, 1, 0, 0, 6, 6, 0, 0, 0, 0, 0, 7, 4, 2, 0, 1, 0, 0, 0, 8, 6, 0, 2, 0, 0, 0, 0, 0, 9, 4, 4, 0, 0, 1, 0, 0, 0, 0, 10 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Left border = phi(n), A000010: (1, 1, 2, 2, 4, 2, 6,...). A129237 = inverse Moebius transform of A129234.

LINKS

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

FORMULA

A054525 * A129234 as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are:

1;

1, 2;

2, 0, 3;

2, 1, 0, 4;

4, 0, 0, 0, 5;

2, 2, 1, 0, 0, 6;

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

4, 2, 0, 1, 0, 0, 0, 8;

...

CROSSREFS

Cf. A129234, A129235, A129237.

Sequence in context: A093949 A324518 A108807 * A127465 A339033 A327028

Adjacent sequences:  A129233 A129234 A129235 * A129237 A129238 A129239

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Apr 05 2007

STATUS

approved

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Last modified September 24 05:29 EDT 2021. Contains 347623 sequences. (Running on oeis4.)