A247340 - cp's OEIS frontend

A247340 Numbers n such that each prime divisor of the semiprime n^2+1 is also a divisor of a^2+1 and b^2+1 respectively for some a, b < n.

n	a(n)
1	3
2	8
3	30
4	46
5	50
6	76
7	100
8	144
9	254
10	266
11	274
12	286
13	334
14	380
15	456
16	494
17	504
18	516
19	520
20	526
21	566
22	664
23	670
24	726
25	756
26	810
27	836
28	844
29	874
30	1040
31	1064
32	1086
33	1130
34	1164
35	1216
36	1250
37	1300
38	1476
39	1714
40	1740
41	1800
42	1826
43	1834
44	1946
45	1950
46	2014
47	2194
48	2200
49	2220
50	2324

[3, 8, 30, 46, 50, 76, 100, 144, 254, 266, 274, 286, 334, 380, 456, 494, 504, 516, 520, 526, 566, 664, 670, 726, 756, 810, 836, 844, 874, 1040, 1064, 1086, 1130, 1164, 1216, 1250, 1300, 1476, 1714, 1740, 1800, 1826, 1834, 1946, 1950, 2014, 2194, 2200, 2220, 2324]

cp's OEIS Frontend

A247340 Numbers n such that each prime divisor of the semiprime n^2+1 is also a divisor of a^2+1 and b^2+1 respectively for some a, b < n.

Table of values

List of values