A271838 - cp's OEIS frontend

A271838 Somos's sequence {a(8,n)} defined in comment in A018896: a(0)=a(1)= ... = a(17) = 1; for n>=18, a(n) = (a(n-1)*a(n-17)+ a(n-9)^2)/a(n-18).

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	1
11	1
12	1
13	1
14	1
15	1
16	1
17	1
18	2
19	3
20	4
21	5
22	6
23	7
24	8
25	9
26	10
27	14
28	23
29	39
30	64
31	100
32	149
33	213
34	294
35	688
36	1130
37	1683
38	2484
39	3800
40	6100
41	10143
42	17082
43	28584
44	87352
45	234714
46	521145
47	1013424
48	1809100
49	3067659
50	5075784
51	8375940
52	22379904
53	47848348

[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 14, 23, 39, 64, 100, 149, 213, 294, 688, 1130, 1683, 2484, 3800, 6100, 10143, 17082, 28584, 87352, 234714, 521145, 1013424, 1809100, 3067659, 5075784, 8375940, 22379904, 47848348]

cp's OEIS Frontend

A271838 Somos's sequence {a(8,n)} defined in comment in A018896: a(0)=a(1)= ... = a(17) = 1; for n>=18, a(n) = (a(n-1)*a(n-17)+ a(n-9)^2)/a(n-18).

Table of values

List of values