A276308 - cp's OEIS frontend

A276308 a(n) = (a(n-1)+1)*(a(n-3)+1)/a(n-4) for n > 3, a(0) = a(1) = a(2) = a(3) = 1.

n	a(n)
0	1
1	1
2	1
3	1
4	4
5	10
6	22
7	115
8	319
9	736
10	3886
11	10816
12	24991
13	131989
14	367405
15	848947
16	4483720
17	12480934
18	28839196
19	152314471
20	423984331
21	979683706
22	5174208274
23	14402986300
24	33280406797
25	175770766825
26	489277549849
27	1130554147381
28	5971031863756
29	16621033708546

[1, 1, 1, 1, 4, 10, 22, 115, 319, 736, 3886, 10816, 24991, 131989, 367405, 848947, 4483720, 12480934, 28839196, 152314471, 423984331, 979683706, 5174208274, 14402986300, 33280406797, 175770766825, 489277549849, 1130554147381, 5971031863756, 16621033708546]

cp's OEIS Frontend

A276308 a(n) = (a(n-1)+1)*(a(n-3)+1)/a(n-4) for n > 3, a(0) = a(1) = a(2) = a(3) = 1.

Table of values

List of values