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A160645
A triangular array distributing the values of sequence A120380.
1
2, 5, 6, 10, 55, 12, 20, 302, 285, 20, 36, 1307, 3216, 1015, 30, 65, 4772, 24859, 20566, 2870, 42, 110, 15509, 150264, 257954, 96000, 6930, 56, 185, 46006, 763123, 2374064, 1834151, 360272, 14910, 72, 300, 127109, 3395312, 17535553, 24381958
OFFSET
1,1
COMMENTS
Column 1 is essentially A000712 and the main diagonal is essentially A002378.
Row n of this triangle is row n*(n+1) of A115994, reversed.
LINKS
EXAMPLE
The table begins:
2;
5, 6;
10, 55, 12;
20, 302, 285, 20;
36, 1307, 3216, 1015, 30;
65, 4772, 24859, 20566, 2870, 42;
...
MAPLE
nn:=8: g:=sum(t^k*q^(k^2)/product((1-q^h)^2, h=1..k), k=1..nn): gser:=series(g, q=0, nn*(nn+1)+1): for n from 1 to nn do P[n]:=coeff(gser, q^(n*(n+1))) od: for n from 1 to nn do seq(coeff(P[n], t, n-j+1), j=1..n); od; # Nathaniel Johnston, Apr 30 2011
CROSSREFS
Cf. A128626 (analogous based on p(n^2)), A000712, A002378.
Sequence in context: A073825 A015891 A238146 * A248616 A341522 A265716
KEYWORD
nonn,tabl
AUTHOR
Alford Arnold, May 26 2009
EXTENSIONS
Edited and extended by Nathaniel Johnston, Apr 30 2011
STATUS
approved