OFFSET
1,2
EXAMPLE
Array begins:
1, 2, 3, 4, 5, 6, 7, ...
4, 8, 12, 16, 20, 24, 28, ...
9, 18, 27, 36, 45, 54, 63, ...
20, 40, 60, 80, 100, 120, 140, ...
35, 70, 105, 140, 175, 210, 245, ...
66, 132, 198, 264, 330, 396, 462, ...
105, 210, 315, 420, 525, 630, 735, ...
MAPLE
A182728 := proc(n, k) n*k*combinat[numbpart](n) ; end proc:
seq(seq( A182728(d+1-k, k), k=1..d), d=1..10) ; # R. J. Mathar, Feb 01 2011
CROSSREFS
KEYWORD
AUTHOR
Omar E. Pol, Jan 22 2011
STATUS
approved