|
| |
|
|
A025965
|
|
Expansion of 1/((1-2x)(1-4x)(1-6x)(1-7x)).
|
|
0
|
|
|
|
1, 19, 233, 2351, 21273, 179823, 1452361, 11360767, 86821625, 652052687, 4832272809, 35441720223, 257820455257, 1863247878511, 13394300154377, 95871638560319, 683779284669369, 4862556240775695, 34494638612661865
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
0,2
|
|
|
LINKS
|
|
|
|
FORMULA
|
a(n) = -2^n/5 +16*4^n/3 -27*6^n/1 +343*7^n/15. - R. J. Mathar, Jun 20 2013
|
|
|
MATHEMATICA
|
CoefficientList[Series[1/((1-2x)(1-4x)(1-6x)(1-7x)), {x, 0, 30}], x] (* or *) LinearRecurrence[{19, -128, 356, -336}, {1, 19, 233, 2351}, 30] (* Harvey P. Dale, Jun 03 2021 *)
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn,easy
|
|
|
AUTHOR
|
|
|
|
STATUS
|
approved
|
| |
|
|
