A368593 - cp's OEIS frontend

A368593 Expansion of g.f. A(x) satisfying A(x) = 1 + x(A(x)^2 - A(-x)^2)/2 + xsqrt( (A(x)^4 + A(-x)^4)/2 ).

n	a(n)
0	1
1	1
2	2
3	7
4	18
5	78
6	220
7	1043
8	3090
9	15402
10	47044
11	242126
12	755076
13	3973820
14	12580344
15	67303139
16	215511330
17	1167556434
18	3772175860
19	20640707866
20	67167649868
21	370510806212
22	1212836703304
23	6735128062542
24	22156120392276
25	123731147310820
26	408741630687656
27	2293595176625340

[1, 1, 2, 7, 18, 78, 220, 1043, 3090, 15402, 47044, 242126, 755076, 3973820, 12580344, 67303139, 215511330, 1167556434, 3772175860, 20640707866, 67167649868, 370510806212, 1212836703304, 6735128062542, 22156120392276, 123731147310820, 408741630687656, 2293595176625340]

cp's OEIS Frontend

A368593 Expansion of g.f. A(x) satisfying A(x) = 1 + x(A(x)^2 - A(-x)^2)/2 + xsqrt( (A(x)^4 + A(-x)^4)/2 ).

Table of values

List of values

cp's OEIS Frontend

A368593 Expansion of g.f. A(x) satisfying A(x) = 1 + x*(A(x)^2 - A(-x)^2)/2 + x*sqrt( (A(x)^4 + A(-x)^4)/2 ).

Table of values

List of values

A368593 Expansion of g.f. A(x) satisfying A(x) = 1 + x(A(x)^2 - A(-x)^2)/2 + xsqrt( (A(x)^4 + A(-x)^4)/2 ).