A232540 - cp's OEIS frontend

A232540 Numbers n such that (n(n+1)/2) modulo sigma(n) = 1.

n	a(n)
1	10
2	22
3	34
4	46
5	58
6	82
7	94
8	106
9	118
10	142
11	166
12	178
13	202
14	214
15	226
16	262
17	274
18	298
19	334
20	346
21	358
22	382
23	385
24	394
25	430
26	454
27	466
28	478
29	502
30	514
31	526
32	538
33	562
34	586
35	622
36	634
37	694
38	706
39	718
40	766
41	778
42	802
43	838
44	862
45	886
46	898
47	922
48	934
49	958
50	982
51	1006
52	1018
53	1042

[10, 22, 34, 46, 58, 82, 94, 106, 118, 142, 166, 178, 202, 214, 226, 262, 274, 298, 334, 346, 358, 382, 385, 394, 430, 454, 466, 478, 502, 514, 526, 538, 562, 586, 622, 634, 694, 706, 718, 766, 778, 802, 838, 862, 886, 898, 922, 934, 958, 982, 1006, 1018, 1042]

cp's OEIS Frontend

A232540 Numbers n such that (n(n+1)/2) modulo sigma(n) = 1.

Table of values

List of values