A307161 - cp's OEIS frontend

A307161 Numbers n such that A307159(n) = Sum_{k=1..n} bsigma(k) is divisible by n, where bsigma(k) is the sum of bi-unitary divisors of k (A188999).

n	a(n)
1	1
2	2
3	17
4	37
5	50
6	56
7	391
8	919
9	1399
10	2829
11	6249
12	13664
13	28829
14	62272
15	67195
16	585391
17	5504271
18	6798541
19	10763933
20	866660818
21	3830393407
22	11044287758
23	23058607363
24	83159875881
25	206501883259
26	297734985607
27	1087473543732
28	1184060078117
29	2789730557061
30	2821551579466
31	3529184155643

[1, 2, 17, 37, 50, 56, 391, 919, 1399, 2829, 6249, 13664, 28829, 62272, 67195, 585391, 5504271, 6798541, 10763933, 866660818, 3830393407, 11044287758, 23058607363, 83159875881, 206501883259, 297734985607, 1087473543732, 1184060078117, 2789730557061, 2821551579466, 3529184155643]

cp's OEIS Frontend

A307161 Numbers n such that A307159(n) = Sum_{k=1..n} bsigma(k) is divisible by n, where bsigma(k) is the sum of bi-unitary divisors of k (A188999).

Table of values

List of values