A030017 - cp's OEIS frontend

A030017 a(1) = 1, a(n+1) = Sum_{k = 1..n} p(k)*a(n+1-k), where p(k) is the k-th prime.

n	a(n)
1	1
2	2
3	7
4	25
5	88
6	311
7	1095
8	3858
9	13591
10	47881
11	168688
12	594289
13	2093693
14	7376120
15	25986209
16	91549913
17	322532092
18	1136286727
19	4003159847
20	14103208628
21	49685873471
22	175044281583
23	616684348614
24	2172590743211
25	7654078700221
26	26965465508072
27	94999850216565

[1, 2, 7, 25, 88, 311, 1095, 3858, 13591, 47881, 168688, 594289, 2093693, 7376120, 25986209, 91549913, 322532092, 1136286727, 4003159847, 14103208628, 49685873471, 175044281583, 616684348614, 2172590743211, 7654078700221, 26965465508072, 94999850216565]

cp's OEIS Frontend

A030017 a(1) = 1, a(n+1) = Sum_{k = 1..n} p(k)*a(n+1-k), where p(k) is the k-th prime.

Table of values

List of values