A383358 - cp's OEIS frontend

A383358 Numbers k >= 2 such that (S(k) - I(k)) / (k - 1) is an integer, where S(k) = Sum_{i=2..k} A007918(i) and I(k) = Sum_{i=2..k} A007917(i).

n	a(n)
1	2
2	3
3	16
4	21
5	23
6	39
7	49
8	381
9	396
10	24963
11	39762
12	40101
13	40276
14	4431583
15	21553054
16	36244531
17	2183957515
18	2183971285
19	2183971945
20	3636636400
21	3636636411
22	6063744535
23	16846463635
24	28070695902
25	215867952637
26	359222008925
27	597739400517
28	597739400913
29	597739426757

[2, 3, 16, 21, 23, 39, 49, 381, 396, 24963, 39762, 40101, 40276, 4431583, 21553054, 36244531, 2183957515, 2183971285, 2183971945, 3636636400, 3636636411, 6063744535, 16846463635, 28070695902, 215867952637, 359222008925, 597739400517, 597739400913, 597739426757]

cp's OEIS Frontend

A383358 Numbers k >= 2 such that (S(k) - I(k)) / (k - 1) is an integer, where S(k) = Sum_{i=2..k} A007918(i) and I(k) = Sum_{i=2..k} A007917(i).

Table of values

List of values