|
|
A164976
|
|
Triangle read by rows, expansion of 1/(1-2*y*x-x+x^2-y*x^2).
|
|
2
|
|
|
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, 1, 4, -74, -80, 528, 1040, 640, 128, 0, 15, -33, -366, 121, 2168, 2928, 1472, 256, -1, 12, 75, -426, -1219, 1898, 7664, 7840, 3328, 512
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,3
|
|
COMMENTS
|
|
|
LINKS
|
|
|
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
|
|
|
AUTHOR
|
|
|
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
|
|
STATUS
|
approved
|
|
|
|