A307043 - cp's OEIS frontend

A307043 Numbers n such that A307042(n) = Sum_{k=1..n} esigma(k) is divisible by n, where esigma(k) is sum of exponential divisors of k (A051377).

n	a(n)
1	1
2	3
3	4
4	8
5	13
6	78
7	94
8	481
9	511
10	4819
11	13557
12	23083
13	84245
14	204744
15	562243
16	591105
17	614339
18	617675
19	656263
20	1545716
21	6370802
22	34882737
23	534034248
24	601990019
25	1153304776
26	2064184733
27	3570196547
28	10572032882

[1, 3, 4, 8, 13, 78, 94, 481, 511, 4819, 13557, 23083, 84245, 204744, 562243, 591105, 614339, 617675, 656263, 1545716, 6370802, 34882737, 534034248, 601990019, 1153304776, 2064184733, 3570196547, 10572032882]

cp's OEIS Frontend

A307043 Numbers n such that A307042(n) = Sum_{k=1..n} esigma(k) is divisible by n, where esigma(k) is sum of exponential divisors of k (A051377).

Table of values

List of values