A309272 - cp's OEIS frontend

A309272 Numbers m such that m divides A173290(m) = Sum_{k=1..m} psi(k), where psi is the Dedekind psi function (A001615).

n	a(n)
1	1
2	2
3	5
4	15
5	31
6	40
7	66
8	81
9	315
10	966
11	1398
12	1768
13	30166
14	32335
15	98734
16	388033
17	591597
18	1375056
19	14966304
20	15160528
21	50793208
22	51302236
23	99253376
24	110994356
25	230465053
26	402340268
27	497982399
28	2027319577
29	2879855394
30	18450762682
31	29922126368
32	31711273834
33	40583934786

[1, 2, 5, 15, 31, 40, 66, 81, 315, 966, 1398, 1768, 30166, 32335, 98734, 388033, 591597, 1375056, 14966304, 15160528, 50793208, 51302236, 99253376, 110994356, 230465053, 402340268, 497982399, 2027319577, 2879855394, 18450762682, 29922126368, 31711273834, 40583934786]

cp's OEIS Frontend

A309272 Numbers m such that m divides A173290(m) = Sum_{k=1..m} psi(k), where psi is the Dedekind psi function (A001615).

Table of values

List of values