A157306 - cp's OEIS frontend

A157306 G.f. A(x) satisfies the condition that both G(x) = A(x/G(x)) and H(x) = A(x*H(x)) have zeros for every other coefficient after initial terms; g.f. of dual sequence A157303 satisfies the same condition.

n	a(n)
0	1
1	1
2	-1
3	-5
4	23
5	151
6	-1249
7	-10961
8	122975
9	1380703
10	-18981121
11	-261461441
12	4220277887
13	69016559743
14	-1278668869633
15	-24212706029825
16	507099112447487
17	10908810091109887
18	-255195984676134913
19	-6145413122840501249

[1, 1, -1, -5, 23, 151, -1249, -10961, 122975, 1380703, -18981121, -261461441, 4220277887, 69016559743, -1278668869633, -24212706029825, 507099112447487, 10908810091109887, -255195984676134913, -6145413122840501249]

cp's OEIS Frontend

A157306 G.f. A(x) satisfies the condition that both G(x) = A(x/G(x)) and H(x) = A(x*H(x)) have zeros for every other coefficient after initial terms; g.f. of dual sequence A157303 satisfies the same condition.

Table of values

List of values