A363441 - cp's OEIS frontend

A363441 G.f. satisfies A(x) = exp( Sum_{k>=1} (-1)^(k+1) * A(x^k) * (2*x)^k/k ).

n	a(n)
0	1
1	2
2	4
3	16
4	52
5	208
6	840
7	3520
8	15008
9	65344
10	288408
11	1288416
12	5813744
13	26460800
14	121333200
15	559991712
16	2599385536
17	12127405952
18	56837861376
19	267473333120
20	1263354463056
21	5987210061184
22	28461008374480
23	135672151034304
24	648406644570048

[1, 2, 4, 16, 52, 208, 840, 3520, 15008, 65344, 288408, 1288416, 5813744, 26460800, 121333200, 559991712, 2599385536, 12127405952, 56837861376, 267473333120, 1263354463056, 5987210061184, 28461008374480, 135672151034304, 648406644570048]

cp's OEIS Frontend

A363441 G.f. satisfies A(x) = exp( Sum_{k>=1} (-1)^(k+1) * A(x^k) * (2*x)^k/k ).

Table of values

List of values