A157304 - cp's OEIS frontend

A157304 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 A157307 satisfies the same condition.

n	a(n)
0	1
1	1
2	2
3	0
4	-26
5	0
6	1378
7	0
8	-141202
9	0
10	22716418
11	0
12	-5218302090
13	0
14	1619288968386
15	0
16	-653379470919714
17	0
18	333014944014777730
19	0
20	-209463165121436380282
21	0
22	159492000935562428176162
23	0
24	-144654795258284936534929586
25	0

[1, 1, 2, 0, -26, 0, 1378, 0, -141202, 0, 22716418, 0, -5218302090, 0, 1619288968386, 0, -653379470919714, 0, 333014944014777730, 0, -209463165121436380282, 0, 159492000935562428176162, 0, -144654795258284936534929586, 0]

cp's OEIS Frontend

A157304 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 A157307 satisfies the same condition.

Table of values

List of values