OFFSET
0,3
COMMENTS
Leftmost column is A010892.
A164975 has a similar g.f.: x/(1-2*y*x-x-x^2+y*x^2).. - Georg Fischer, Oct 15 2023
LINKS
Georg Fischer, Table of n, a(n) for n = 1..5050
EXAMPLE
Triangle begins:
1;
1, 2;
0, 5, 4;
-1, 4, 16, 8;
-1, -3, 25, 44, 16;
0, -10, 7, 102, 112, 32;
1, -8, -41, 97, 344, 272, 64;
...
MAPLE
s := 1/(1-2*y*x-x+x^2-y*x^2): t := series(s, x, 12):
seq(print(seq(coeff(coeff(t, x, n), y, m), m=0..n)), n=0..11); # Georg Fischer, Oct 15 2023
CROSSREFS
KEYWORD
tabl,sign
AUTHOR
Mark Dols, Sep 03 2009
EXTENSIONS
Missing commas inserted in what used to be the term "1-8-41" (now "1,-8,-41") by Geoff Bailey (geoff(AT)maths.usyd.edu.au), Nov 30 2009
Definition changed by Georg Fischer, Oct 15 2023
STATUS
approved