A111642 - cp's OEIS frontend

A111642 Expansion of 2(x-1)(x+1)/((x^2+4x+1)(x^2-2*x-1)).

n	a(n)
0	2
1	-12
2	54
3	-224
4	890
5	-3452
6	13198
7	-50016
8	188498
9	-707916
10	2652678
11	-9925760
12	37105802
13	-138631292
14	517742494
15	-1933118784
16	7216615970
17	-26937891852
18	100545928278
19	-375272321696
20	1400607336218
21	-5227311479036
22	19509011469358
23	-72809634633120
24	271731700422002

[2, -12, 54, -224, 890, -3452, 13198, -50016, 188498, -707916, 2652678, -9925760, 37105802, -138631292, 517742494, -1933118784, 7216615970, -26937891852, 100545928278, -375272321696, 1400607336218, -5227311479036, 19509011469358, -72809634633120, 271731700422002]

cp's OEIS Frontend

A111642 Expansion of 2(x-1)(x+1)/((x^2+4x+1)(x^2-2*x-1)).

Table of values

List of values

cp's OEIS Frontend

A111642 Expansion of 2*(x-1)*(x+1)/((x^2+4*x+1)*(x^2-2*x-1)).

Table of values

List of values

A111642 Expansion of 2(x-1)(x+1)/((x^2+4x+1)(x^2-2*x-1)).