A158197 - cp's OEIS frontend

A158197 Expansion of (1-x^2c(x)^4)/(1-4x*c(x)^2), c(x) the g.f. of A000108.

n	a(n)
0	1
1	4
2	23
3	140
4	866
5	5388
6	33603
7	209796
8	1310510
9	8188328
10	51169094
11	319779544
12	1998527188
13	12490460620
14	78064190235
15	487896926580
16	3049340393430
17	19058321475960
18	119114304522450
19	744463650984360
20	4652895041524380

[1, 4, 23, 140, 866, 5388, 33603, 209796, 1310510, 8188328, 51169094, 319779544, 1998527188, 12490460620, 78064190235, 487896926580, 3049340393430, 19058321475960, 119114304522450, 744463650984360, 4652895041524380]

cp's OEIS Frontend

A158197 Expansion of (1-x^2c(x)^4)/(1-4x*c(x)^2), c(x) the g.f. of A000108.

Table of values

List of values

cp's OEIS Frontend

A158197 Expansion of (1-x^2*c(x)^4)/(1-4*x*c(x)^2), c(x) the g.f. of A000108.

Table of values

List of values

A158197 Expansion of (1-x^2c(x)^4)/(1-4x*c(x)^2), c(x) the g.f. of A000108.