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A140705 A000012 * A051731^4. 2
1, 5, 1, 9, 1, 1, 19, 5, 1, 1, 23, 5, 1, 1, 1, 39, 9, 5, 1, 1, 1, 43, 9, 5, 1, 1, 1, 1, 63, 19, 5, 5, 1, 1, 1, 1, 73, 19, 9, 5, 1, 1, 1, 1, 1, 89, 23, 9, 5, 5, 1, 1, 1, 1, 1, 93, 23, 9, 5, 51, 1, 1, 1, 1, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row sums = A061203: (1, 6, 11, 26, 31, 56,...).

Left column = A061202: (1, 5, 9, 19, 23, 39,...).

LINKS

Table of n, a(n) for n=1..65.

FORMULA

A000012 * A051731^4 as infinite lower triangular matrices, where A051731 = the inverse Mobius transform and A000012 = an infinite lower triangular matrix with all 1's.

EXAMPLE

First few rows of the triangle are:

1;

5, 1;

9, 1, 1;

19, 5, 1, 1;

23, 5, 1, 1, 1;

39, 9, 5, 1, 1, 1;

43, 9, 5, 1, 1, 1, 1;

63, 19, 5, 5, 1, 1, 1, 1;

...

CROSSREFS

Cf. A051731, A061203, A061202.

Sequence in context: A193856 A255294 A115521 * A266072 A147423 A147085

Adjacent sequences:  A140702 A140703 A140704 * A140706 A140707 A140708

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, May 24 2008

STATUS

approved

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Last modified November 13 02:59 EST 2019. Contains 329085 sequences. (Running on oeis4.)