A275206 - cp's OEIS frontend

A275206 Expansion of (A(x)^2 - A(x^2))/2 where A(x) = A000108(x) - 1.

n	a(n)
0	0
1	0
2	0
3	2
4	6
5	24
6	80
7	286
8	994
9	3536
10	12576
11	45220
12	163372
13	594320
14	2172768
15	7983990
16	29464010
17	109174560
18	405990464
19	1514797020
20	5669004692
21	21275014800
22	80047213792
23	301892460012
24	1141068949396
25	4321730134624
26	16399422014400
27	62340424959176
28	237373155238104
29	905251034394784

[0, 0, 0, 2, 6, 24, 80, 286, 994, 3536, 12576, 45220, 163372, 594320, 2172768, 7983990, 29464010, 109174560, 405990464, 1514797020, 5669004692, 21275014800, 80047213792, 301892460012, 1141068949396, 4321730134624, 16399422014400, 62340424959176, 237373155238104, 905251034394784]

cp's OEIS Frontend

A275206 Expansion of (A(x)^2 - A(x^2))/2 where A(x) = A000108(x) - 1.

Table of values

List of values