A121442 - cp's OEIS frontend

A121442 Expansion of (1-x^2)/(1-x-9*x^2+x^3).

n	a(n)
0	1
1	1
2	9
3	17
4	97
5	241
6	1097
7	3169
8	12801
9	40225
10	152265
11	501489
12	1831649
13	6192785
14	22176137
15	76079553
16	269472001
17	932011841
18	3281180297
19	11399814865
20	39998425697
21	139315579185
22	487901595593
23	1701743382561
24	5953542163713
25	20781331011169
26	72661467102025

[1, 1, 9, 17, 97, 241, 1097, 3169, 12801, 40225, 152265, 501489, 1831649, 6192785, 22176137, 76079553, 269472001, 932011841, 3281180297, 11399814865, 39998425697, 139315579185, 487901595593, 1701743382561, 5953542163713, 20781331011169, 72661467102025]

cp's OEIS Frontend

A121442 Expansion of (1-x^2)/(1-x-9*x^2+x^3).

Table of values

List of values