A244886 - cp's OEIS frontend

A244886 G.f.: (1-x+sqrt(1-2x-3x^2))/(1-3x+x^2+x^3+(1-x^2)sqrt(1-2x-3x^2)).

n	a(n)
0	1
1	1
2	2
3	4
4	9
5	22
6	56
7	147
8	393
9	1065
10	2915
11	8042
12	22330
13	62339
14	174837
15	492313
16	1391134
17	3943130
18	11207594
19	31934552
20	91197474
21	260969372
22	748176873
23	2148622932
24	6180146228
25	17801978083
26	51347929943
27	148293450023
28	428774359142
29	1241110916678

[1, 1, 2, 4, 9, 22, 56, 147, 393, 1065, 2915, 8042, 22330, 62339, 174837, 492313, 1391134, 3943130, 11207594, 31934552, 91197474, 260969372, 748176873, 2148622932, 6180146228, 17801978083, 51347929943, 148293450023, 428774359142, 1241110916678]

cp's OEIS Frontend

A244886 G.f.: (1-x+sqrt(1-2x-3x^2))/(1-3x+x^2+x^3+(1-x^2)sqrt(1-2x-3x^2)).

Table of values

List of values

cp's OEIS Frontend

A244886 G.f.: (1-x+sqrt(1-2*x-3*x^2))/(1-3*x+x^2+x^3+(1-x^2)*sqrt(1-2*x-3*x^2)).

Table of values

List of values

A244886 G.f.: (1-x+sqrt(1-2x-3x^2))/(1-3x+x^2+x^3+(1-x^2)sqrt(1-2x-3x^2)).