A357307 - cp's OEIS frontend

A357307 a(0) = 1, a(1) = 0, a(2) = 1; a(n) = a(n-1) + Sum_{k=0..n-3} a(k) * a(n-k-3).

n	a(n)
0	1
1	0
2	1
3	2
4	2
5	4
6	8
7	13
8	25
9	49
10	91
11	177
12	349
13	681
14	1349
15	2693
16	5377
17	10806
18	21820
19	44163
20	89721
21	182868
22	373616
23	765341
24	1571551
25	3233690
26	6667242
27	13772469
28	28498419
29	59065838
30	122606998
31	254865837
32	530507839
33	1105663034
34	2307131590
35	4819623077
36	10079039819
37	21099213611
38	44211213545

[1, 0, 1, 2, 2, 4, 8, 13, 25, 49, 91, 177, 349, 681, 1349, 2693, 5377, 10806, 21820, 44163, 89721, 182868, 373616, 765341, 1571551, 3233690, 6667242, 13772469, 28498419, 59065838, 122606998, 254865837, 530507839, 1105663034, 2307131590, 4819623077, 10079039819, 21099213611, 44211213545]

cp's OEIS Frontend

A357307 a(0) = 1, a(1) = 0, a(2) = 1; a(n) = a(n-1) + Sum_{k=0..n-3} a(k) * a(n-k-3).

Table of values

List of values