A116410 - cp's OEIS frontend

A116410 Expansion of (1-x-2x^2+sqrt(1-2x-3x^2))/(2*(1-2x-3x^2)).

n	a(n)
0	1
1	1
2	3
3	8
4	23
5	66
6	192
7	561
8	1647
9	4850
10	14318
11	42351
12	125468
13	372191
14	1105275
15	3285288
16	9772767
17	29090826
18	86646486
19	258208671
20	769820418
21	2296067565
22	6850744365
23	20447143866
24	61045757604
25	182303186391
26	544550917797

[1, 1, 3, 8, 23, 66, 192, 561, 1647, 4850, 14318, 42351, 125468, 372191, 1105275, 3285288, 9772767, 29090826, 86646486, 258208671, 769820418, 2296067565, 6850744365, 20447143866, 61045757604, 182303186391, 544550917797]

cp's OEIS Frontend

A116410 Expansion of (1-x-2x^2+sqrt(1-2x-3x^2))/(2*(1-2x-3x^2)).

Table of values

List of values