OFFSET
0,19
EXAMPLE
Triangle begins:
[0]
[0, 0, 0]
[1, 0, 1, 0, 1]
[1, 0, 0, 1, 0, 0, 1]
[1, 0, 2, 0, 3, 0, 2, 0, 1]
[1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1]
[1, 0, 3, 2, 0, 0, 3, 0, 0, 2, 3, 0, 1]
MAPLE
f := n -> seriestolist( series( expand( (1+x+x^2)^n ) mod n, x, 2*n+1));
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
N. J. A. Sloane, Feb 20 2004
STATUS
approved