A238138 - cp's OEIS frontend

A238138 Let p(k) be the k-th prime of the form m^2 + 1. Sequence lists the numbers k such that each of the prime divisors of the composite numbers of the form m^2 + 1 between p(k) and p(k+1) is also a divisor of some m^2 + 1 < p(k).

n	a(n)
1	62
2	149
3	257
4	281
5	286
6	365
7	403
8	418
9	526
10	534
11	573
12	577
13	579
14	712
15	744
16	825
17	849
18	877
19	973
20	992
21	1016
22	1106
23	1191
24	1243
25	1251
26	1257
27	1286
28	1341
29	1388
30	1440
31	1487
32	1526
33	1636
34	1656
35	1841
36	1844
37	1846
38	1953
39	1966
40	2028
41	2108
42	2120
43	2142
44	2225
45	2272
46	2392
47	2409

[62, 149, 257, 281, 286, 365, 403, 418, 526, 534, 573, 577, 579, 712, 744, 825, 849, 877, 973, 992, 1016, 1106, 1191, 1243, 1251, 1257, 1286, 1341, 1388, 1440, 1487, 1526, 1636, 1656, 1841, 1844, 1846, 1953, 1966, 2028, 2108, 2120, 2142, 2225, 2272, 2392, 2409]

cp's OEIS Frontend

A238138 Let p(k) be the k-th prime of the form m^2 + 1. Sequence lists the numbers k such that each of the prime divisors of the composite numbers of the form m^2 + 1 between p(k) and p(k+1) is also a divisor of some m^2 + 1 < p(k).

Table of values

List of values