A055755 - cp's OEIS frontend

A055755 4n^2+1, 2n^2+1, 2n^2-1 are all prime.

n	a(n)
1	3
2	42
3	45
4	102
5	132
6	153
7	237
8	297
9	375
10	468
11	570
12	990
13	2085
14	2478
15	2712
16	3240
17	4743
18	5382
19	5517
20	6828
21	7962
22	8970
23	8982
24	9033
25	9570
26	9612
27	9747
28	9813
29	10692
30	12363
31	12453
32	12468
33	12750
34	13902
35	14763
36	14925
37	15750
38	16365
39	17118
40	17688
41	19527

[3, 42, 45, 102, 132, 153, 237, 297, 375, 468, 570, 990, 2085, 2478, 2712, 3240, 4743, 5382, 5517, 6828, 7962, 8970, 8982, 9033, 9570, 9612, 9747, 9813, 10692, 12363, 12453, 12468, 12750, 13902, 14763, 14925, 15750, 16365, 17118, 17688, 19527]

cp's OEIS Frontend

A055755 4n^2+1, 2n^2+1, 2n^2-1 are all prime.

Table of values

List of values