A260872 - cp's OEIS frontend

A260872 Squarefree numbers k such that k+1 has no primes of the form 4*m-1 and at most one 2 in its prime factorization.

n	a(n)
1	1
2	33
3	57
4	73
5	105
6	129
7	145
8	177
9	193
10	201
11	217
12	249
13	273
14	313
15	337
16	345
17	385
18	393
19	409
20	457
21	465
22	481
23	537
24	553
25	561
26	577
27	609
28	633
29	649
30	673
31	697
32	705
33	745
34	753
35	777
36	793
37	817
38	849
39	865
40	889
41	897
42	913
43	921
44	969
45	985
46	1009
47	1041
48	1065
49	1081
50	1113
51	1129

[1, 33, 57, 73, 105, 129, 145, 177, 193, 201, 217, 249, 273, 313, 337, 345, 385, 393, 409, 457, 465, 481, 537, 553, 561, 577, 609, 633, 649, 673, 697, 705, 745, 753, 777, 793, 817, 849, 865, 889, 897, 913, 921, 969, 985, 1009, 1041, 1065, 1081, 1113, 1129]

cp's OEIS Frontend

A260872 Squarefree numbers k such that k+1 has no primes of the form 4*m-1 and at most one 2 in its prime factorization.

Table of values

List of values