A242370 - cp's OEIS frontend

A242370 Triangle read by rows: T(n, k) is the smallest x such that the denominator of sigma(x)/x is equal to n and the numerator of sigma(x)/x is congruent to k modulo n.

n	a(n)
2	2
3	3
4	84
5	40
6	2
7	4
8	5
9	30
10	15
11	10
12	18
13	3
14	2
15	84
16	1907020800
17	7
18	42
19	840
20	280
21	14
22	168
23	58752
24	40
25	32640
26	2
27	96
28	4
29	8
30	540
31	54
32	3
33	9
34	117
35	84
36	135
37	252
38	20
39	5
40	238080
41	30
42	2
43	15
44	1120
45	10
46	10080
47	11
48	66
49	1320
50	198
51	33
52	132
53	22
54	264
55	528
56	44
57	392448
58	18
59	40
60	3

[2, 3, 84, 40, 2, 4, 5, 30, 15, 10, 18, 3, 2, 84, 1907020800, 7, 42, 840, 280, 14, 168, 58752, 40, 32640, 2, 96, 4, 8, 540, 54, 3, 9, 117, 84, 135, 252, 20, 5, 238080, 30, 2, 15, 1120, 10, 10080, 11, 66, 1320, 198, 33, 132, 22, 264, 528, 44, 392448, 18, 40, 3]

cp's OEIS Frontend

A242370 Triangle read by rows: T(n, k) is the smallest x such that the denominator of sigma(x)/x is equal to n and the numerator of sigma(x)/x is congruent to k modulo n.

Table of values

List of values