A129596 - OEIS

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A129596

Table T(i,j): T(1,1), T(2,1), T(2,2), T(3,1), T(3,2), T(3,3), ... of elementwise sums of partitions encoded in the prime factorizations of i and j.

1, 2, 4, 3, 9, 6, 4, 8, 27, 16, 5, 25, 15, 125, 10, 6, 18, 12, 54, 45, 24, 7, 49, 35, 343, 21, 175, 14, 8, 16, 81, 32, 625, 162, 2401, 64, 9, 27, 18, 81, 75, 36, 245, 243, 54, 10, 50, 30, 250, 20, 90, 63, 1250, 150, 40, 11, 121, 77, 1331, 55, 539, 33, 14641, 847, 275

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OFFSET

1,2

COMMENTS

This is the upper triangular region of array A129595 (or equally, the lower triangular region, because A129595 is symmetric).

LINKS

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

CROSSREFS

Sequence in context: A111390 A349323 A344554 * A356222 A329901 A284572

Adjacent sequences: A129593 A129594 A129595 * A129597 A129598 A129599

KEYWORD

nonn,tabl

AUTHOR

Antti Karttunen, May 01 2007, based on Marc LeBrun's Jan 11 2006 message on the SeqFan mailing list

STATUS

approved