A187124 - cp's OEIS frontend

A187124 G.f. A(x) satisfies: [x^(n+3)] A(F^n(x)) = 0 for n>0 where F^n(x) denotes the n-th iteration of F(x) = x+x^2 with F^0(x)=x.

n	a(n)
3	1
4	-3
5	6
6	-18
7	48
8	-195
9	549
10	-3465
11	7452
12	-112707
13	-5994
14	-6866904
15	-25659292
16	-700243362
17	-5594278734
18	-106900155574
19	-1284177510456
20	-22692117042216
21	-348993455353854
22	-6343625959542180
23	-114598750263323292
24	-2239367384128230334
25	-45442026505346961480
26	-967951044447512385336

[1, -3, 6, -18, 48, -195, 549, -3465, 7452, -112707, -5994, -6866904, -25659292, -700243362, -5594278734, -106900155574, -1284177510456, -22692117042216, -348993455353854, -6343625959542180, -114598750263323292, -2239367384128230334, -45442026505346961480, -967951044447512385336]

cp's OEIS Frontend

A187124 G.f. A(x) satisfies: [x^(n+3)] A(F^n(x)) = 0 for n>0 where F^n(x) denotes the n-th iteration of F(x) = x+x^2 with F^0(x)=x.

Table of values

List of values