A153395 - cp's OEIS frontend

A153395 G.f.: A(x) = F(xG(x)) where F(x) = G(x/F(x)^2) = 1 + xF(x)^2 is the g.f. of A000108 (Catalan) and G(x) = F(xG(x)^2) = 1 + xG(x)^4 is the g.f. of A002293.

n	a(n)
0	1
1	1
2	3
3	13
4	69
5	417
6	2754
7	19373
8	142732
9	1088875
10	8533278
11	68308641
12	556242792
13	4593529882
14	38380159009
15	323860968709
16	2756019889146
17	23625552635184
18	203823793118268
19	1768357487401595
20	15418860927887232
21	135042445950316514

[1, 1, 3, 13, 69, 417, 2754, 19373, 142732, 1088875, 8533278, 68308641, 556242792, 4593529882, 38380159009, 323860968709, 2756019889146, 23625552635184, 203823793118268, 1768357487401595, 15418860927887232, 135042445950316514]

cp's OEIS Frontend

A153395 G.f.: A(x) = F(xG(x)) where F(x) = G(x/F(x)^2) = 1 + xF(x)^2 is the g.f. of A000108 (Catalan) and G(x) = F(xG(x)^2) = 1 + xG(x)^4 is the g.f. of A002293.

Table of values

List of values

cp's OEIS Frontend

A153395 G.f.: A(x) = F(x*G(x)) where F(x) = G(x/F(x)^2) = 1 + x*F(x)^2 is the g.f. of A000108 (Catalan) and G(x) = F(x*G(x)^2) = 1 + x*G(x)^4 is the g.f. of A002293.

Table of values

List of values

A153395 G.f.: A(x) = F(xG(x)) where F(x) = G(x/F(x)^2) = 1 + xF(x)^2 is the g.f. of A000108 (Catalan) and G(x) = F(xG(x)^2) = 1 + xG(x)^4 is the g.f. of A002293.