A014981 - cp's OEIS frontend

A014981 a(n) = c(prime(n))/prime(n), where c = Perrin sequence A001608 (starting 0,2,3,...) and prime(n) is the n-th prime.

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	3
7	7
8	11
9	28
10	120
11	197
12	892
13	2479
14	4148
15	11687
16	56010
17	271913
18	461529
19	2270882
20	6599404
21	11263855
22	56250108
23	164879269
24	830987861
25	7231032935
26	21386730355
27	36802336319
28	109099442316
29	187943217386

[1, 1, 1, 1, 2, 3, 7, 11, 28, 120, 197, 892, 2479, 4148, 11687, 56010, 271913, 461529, 2270882, 6599404, 11263855, 56250108, 164879269, 830987861, 7231032935, 21386730355, 36802336319, 109099442316, 187943217386]

cp's OEIS Frontend

A014981 a(n) = c(prime(n))/prime(n), where c = Perrin sequence A001608 (starting 0,2,3,...) and prime(n) is the n-th prime.

Table of values

List of values