A130069 -id:A130069

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A130070

Moebius transform of A130069.

+20
2

2, 1, 2, 3, 0, 2, 4, 1, 0, 2, 9, 0, 0, 0, 2, 7, 3, 1, 0, 0, 2, 15, 0, 0, 0, 0, 0, 2, 12, 4, 0, 1, 0, 0, 0, 2, 18, 0, 3, 0, 0, 0, 0, 0, 2, 17, 9, 0, 0, 1, 0, 0, 0, 0, 2

(list; table; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Row sums = the primes, A000040: (2, 3, 5, 7, ...). Left column = A007444, the Moebius transform of the primes: (2, 1, 3, 4, 9, 7, 15, ...). A130071 = triangle with reversal of nonzero terms.

LINKS

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

FORMULA

A054525 * A130069.

EXAMPLE

First few rows of the triangle:

1, 2;

3, 0, 2;

4, 1, 0, 2;

9, 0, 0, 0, 2;

7, 3, 1, 0, 0, 2;

15, 0, 0, 0, 0, 0, 2;

12, 4, 0, 1, 0, 0, 0, 2;

18, 0, 3, 0, 0, 0, 0, 0, 2;

17, 9, 0, 0, 1, 0, 0, 0, 0, 2;

...

CROSSREFS

Cf. A054525, A130069, A130071.

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, May 05 2007

STATUS

approved

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