A241529 - cp's OEIS frontend

A241529 Positive numbers k such that k^2 + k + 41 is composite and there are no positive integers a,c,d such that k = caz^2 + ((((d+2)(1/3))c-2)a/d+1)z + ((((367d^2+d+1)(1/9))c^2-((d+2)(1/3))c+1)a/d^2 - (((d-1)(1/3))c+1)/d)/c for an integer z.

n	a(n)
1	2887
2	2969
3	3056
4	3220
5	3365
6	3464
7	3565
8	3611
9	3719
10	3746
11	3814
12	3836
13	3874
14	3879
15	3955
16	4142
17	4147
18	4211
19	4277
20	4371
21	4403
22	4483
23	4564
24	4572
25	4661
26	4730
27	4813
28	4881
29	4888
30	4902
31	4906
32	4965
33	4982
34	5132
35	5175
36	5208
37	5410
38	5431
39	5509
40	5527
41	5564
42	5624
43	5669

[2887, 2969, 3056, 3220, 3365, 3464, 3565, 3611, 3719, 3746, 3814, 3836, 3874, 3879, 3955, 4142, 4147, 4211, 4277, 4371, 4403, 4483, 4564, 4572, 4661, 4730, 4813, 4881, 4888, 4902, 4906, 4965, 4982, 5132, 5175, 5208, 5410, 5431, 5509, 5527, 5564, 5624, 5669]

cp's OEIS Frontend

A241529 Positive numbers k such that k^2 + k + 41 is composite and there are no positive integers a,c,d such that k = caz^2 + ((((d+2)(1/3))c-2)a/d+1)z + ((((367d^2+d+1)(1/9))c^2-((d+2)(1/3))c+1)a/d^2 - (((d-1)(1/3))c+1)/d)/c for an integer z.

Table of values

List of values

cp's OEIS Frontend

A241529 Positive numbers k such that k^2 + k + 41 is composite and there are no positive integers a,c,d such that k = c*a*z^2 + ((((d+2)*(1/3))*c-2)*a/d+1)*z + ((((367*d^2+d+1)*(1/9))*c^2-((d+2)*(1/3))*c+1)*a/d^2 - (((d-1)*(1/3))*c+1)/d)/c for an integer z.

Table of values

List of values

A241529 Positive numbers k such that k^2 + k + 41 is composite and there are no positive integers a,c,d such that k = caz^2 + ((((d+2)(1/3))c-2)a/d+1)z + ((((367d^2+d+1)(1/9))c^2-((d+2)(1/3))c+1)a/d^2 - (((d-1)(1/3))c+1)/d)/c for an integer z.