A261023 - cp's OEIS frontend

A261023 Least number k such that prime(n) = sigma(k) - k - 1.

n	a(n)
1	4
2	9
3	6
4	10
5	121
6	22
7	289
8	34
9	529
10	841
11	58
12	1369
13	30
14	82
15	2209
16	42
17	3481
18	118
19	4489
20	5041
21	70
22	6241
23	6889
24	78
25	9409
26	10201
27	202
28	60
29	214
30	102
31	16129
32	17161
33	18769
34	84
35	138
36	298
37	24649
38	26569
39	27889
40	29929
41	32041
42	358
43	36481
44	238
45	186
46	394
47	44521
48	49729
49	51529

[4, 9, 6, 10, 121, 22, 289, 34, 529, 841, 58, 1369, 30, 82, 2209, 42, 3481, 118, 4489, 5041, 70, 6241, 6889, 78, 9409, 10201, 202, 60, 214, 102, 16129, 17161, 18769, 84, 138, 298, 24649, 26569, 27889, 29929, 32041, 358, 36481, 238, 186, 394, 44521, 49729, 51529]

cp's OEIS Frontend

A261023 Least number k such that prime(n) = sigma(k) - k - 1.

Table of values

List of values