A104237 - cp's OEIS frontend

A104237 Expansion of (1 - x + x^2)(1 + x + x^2 - x^3 + 2x^4)/((1 - x)(1 + x)^2(1 + x^2)*(1 + x - x^2 + x^3)).

n	a(n)
0	1
1	-2
2	5
3	-11
4	26
5	-53
6	104
7	-198
8	375
9	-700
10	1299
11	-2401
12	4432
13	-8167
14	15038
15	-27676
16	50925
17	-93686
18	172337
19	-316999
20	583078
21	-1072473
22	1972612
23	-3628226
24	6673379
25	-12274288
26	22575967
27	-41523709
28	76374044
29	-140473803
30	258371642

[1, -2, 5, -11, 26, -53, 104, -198, 375, -700, 1299, -2401, 4432, -8167, 15038, -27676, 50925, -93686, 172337, -316999, 583078, -1072473, 1972612, -3628226, 6673379, -12274288, 22575967, -41523709, 76374044, -140473803, 258371642]

cp's OEIS Frontend

A104237 Expansion of (1 - x + x^2)(1 + x + x^2 - x^3 + 2x^4)/((1 - x)(1 + x)^2(1 + x^2)*(1 + x - x^2 + x^3)).

Table of values

List of values

cp's OEIS Frontend

A104237 Expansion of (1 - x + x^2)*(1 + x + x^2 - x^3 + 2*x^4)/((1 - x)*(1 + x)^2*(1 + x^2)*(1 + x - x^2 + x^3)).

Table of values

List of values

A104237 Expansion of (1 - x + x^2)(1 + x + x^2 - x^3 + 2x^4)/((1 - x)(1 + x)^2(1 + x^2)*(1 + x - x^2 + x^3)).