A108985 - cp's OEIS frontend

A108985 Expansion of (x+1)(x^3-x^2-x-1)/((1-x)(x^2+2x-1)(x^2+x+1)).

n	a(n)
0	1
1	4
2	11
3	27
4	66
5	161
6	389
7	940
8	2271
9	5483
10	13238
11	31961
12	77161
13	186284
14	449731
15	1085747
16	2621226
17	6328201
18	15277629
19	36883460
20	89044551
21	214972563
22	518989678
23	1252951921
24	3024893521
25	7302738964
26	17630371451
27	42563481867
28	102757335186

[1, 4, 11, 27, 66, 161, 389, 940, 2271, 5483, 13238, 31961, 77161, 186284, 449731, 1085747, 2621226, 6328201, 15277629, 36883460, 89044551, 214972563, 518989678, 1252951921, 3024893521, 7302738964, 17630371451, 42563481867, 102757335186]

cp's OEIS Frontend

A108985 Expansion of (x+1)(x^3-x^2-x-1)/((1-x)(x^2+2x-1)(x^2+x+1)).

Table of values

List of values

cp's OEIS Frontend

A108985 Expansion of (x+1)*(x^3-x^2-x-1)/((1-x)*(x^2+2*x-1)*(x^2+x+1)).

Table of values

List of values

A108985 Expansion of (x+1)(x^3-x^2-x-1)/((1-x)(x^2+2x-1)(x^2+x+1)).