OFFSET
0,3
COMMENTS
LINKS
Alois P. Heinz, Rows n = 0..703
FORMULA
G.f.: product(1+x^j+x^(2j)+tx^(3j)+x^(4j)/(1-x^j), j=1..infinity).
EXAMPLE
T(12,2) = 2 because we have [3,3,3,1,1,1] and [3,2,2,2,1,1,1].
Triangle starts:
1;
1;
2;
2, 1;
5;
6, 1;
9, 2;
12, 3;
MAPLE
g:=product(1+x^j+x^(2*j)+t*x^(3*j)+x^(4*j)/(1-x^j), j=1..35): gser:=simplify(series(g, x=0, 35)): P[0]:=1: for n from 1 to 30 do P[n]:=coeff(gser, x^n) od: for n from 0 to 30 do seq(coeff(P[n], t, j), j=0..degree(P[n])) od; # sequence given in triangular form
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Emeric Deutsch, Apr 29 2006
STATUS
approved