A278921 - cp's OEIS frontend

A278921 Semiprimes of the form p*q where p < q such that q divides p^(q+1) + 1 and (q-p)^(q+1) + 1.

n	a(n)
1	10
2	15
3	65
4	221
5	493
6	671
7	1147
8	1219
9	3439
10	5069
11	12209
12	14893
13	20737
14	24503
15	30083
16	49813
17	61937
18	77507
19	91277
20	97297
21	100337
22	102719
23	109283
24	109783
25	113521
26	132427
27	144301
28	178991
29	204851
30	244523
31	245041
32	246559
33	257149
34	258749
35	312167
36	339497
37	397219
38	433091
39	434617
40	461893
41	465763

[10, 15, 65, 221, 493, 671, 1147, 1219, 3439, 5069, 12209, 14893, 20737, 24503, 30083, 49813, 61937, 77507, 91277, 97297, 100337, 102719, 109283, 109783, 113521, 132427, 144301, 178991, 204851, 244523, 245041, 246559, 257149, 258749, 312167, 339497, 397219, 433091, 434617, 461893, 465763]

cp's OEIS Frontend

A278921 Semiprimes of the form p*q where p < q such that q divides p^(q+1) + 1 and (q-p)^(q+1) + 1.

Table of values

List of values