A384711 - cp's OEIS frontend

A384711 Expansion of (1+x) / (1-2x-6x^2).

n	a(n)
0	1
1	3
2	12
3	42
4	156
5	564
6	2064
7	7512
8	27408
9	99888
10	364224
11	1327776
12	4840896
13	17648448
14	64342272
15	234575232
16	855204096
17	3117859584
18	11366943744
19	41441044992
20	151083752448
21	550813774848
22	2008130064384
23	7321142777856
24	26691065942016
25	97308988551168

[1, 3, 12, 42, 156, 564, 2064, 7512, 27408, 99888, 364224, 1327776, 4840896, 17648448, 64342272, 234575232, 855204096, 3117859584, 11366943744, 41441044992, 151083752448, 550813774848, 2008130064384, 7321142777856, 26691065942016, 97308988551168]

cp's OEIS Frontend

A384711 Expansion of (1+x) / (1-2x-6x^2).

Table of values

List of values

cp's OEIS Frontend

A384711 Expansion of (1+x) / (1-2*x-6*x^2).

Table of values

List of values

A384711 Expansion of (1+x) / (1-2x-6x^2).