A157302 - cp's OEIS frontend

A157302 G.f. A(x) satisfies the condition that both A(x) and F(x) = A(x*F(x)^2) have zeros for every other coefficient after initial terms; g.f. of dual sequence A157305 satisfies the same condition.

n	a(n)
0	1
1	1
2	0
3	-5
4	0
5	183
6	0
7	-14352
8	0
9	1857199
10	0
11	-355082433
12	0
13	94134281460
14	0
15	-33120720127500
16	0
17	14959943533260783
18	0
19	-8447188671812872887
20	0
21	5834800994047642310223
22	0
23	-4842259038722174600622240
24	0

[1, 1, 0, -5, 0, 183, 0, -14352, 0, 1857199, 0, -355082433, 0, 94134281460, 0, -33120720127500, 0, 14959943533260783, 0, -8447188671812872887, 0, 5834800994047642310223, 0, -4842259038722174600622240, 0]

cp's OEIS Frontend

A157302 G.f. A(x) satisfies the condition that both A(x) and F(x) = A(x*F(x)^2) have zeros for every other coefficient after initial terms; g.f. of dual sequence A157305 satisfies the same condition.

Table of values

List of values