A303009 - cp's OEIS frontend

A303009 Numbers n such that both A002450(n)=(2^(2n)-1)/3 and A007583(n)=2*A002450(n)+1 are Fermat pseudoprimes to base 2 (A001567).

n	a(n)
1	23
2	29
3	41
4	53
5	89
6	113
7	131
8	179
9	191
10	233
11	239
12	251
13	281
14	293
15	341
16	359
17	419
18	431
19	443
20	491
21	509
22	593
23	641
24	653
25	659
26	683
27	719
28	743
29	761
30	809
31	911
32	953
33	1013
34	1019
35	1031
36	1049
37	1103
38	1223
39	1229
40	1271
41	1289
42	1409
43	1439
44	1451
45	1481
46	1499
47	1511
48	1559
49	1583
50	1601
51	1733
52	1811
53	1889
54	1901
55	1931
56	1973
57	2003

[23, 29, 41, 53, 89, 113, 131, 179, 191, 233, 239, 251, 281, 293, 341, 359, 419, 431, 443, 491, 509, 593, 641, 653, 659, 683, 719, 743, 761, 809, 911, 953, 1013, 1019, 1031, 1049, 1103, 1223, 1229, 1271, 1289, 1409, 1439, 1451, 1481, 1499, 1511, 1559, 1583, 1601, 1733, 1811, 1889, 1901, 1931, 1973, 2003]

cp's OEIS Frontend

A303009 Numbers n such that both A002450(n)=(2^(2n)-1)/3 and A007583(n)=2*A002450(n)+1 are Fermat pseudoprimes to base 2 (A001567).

Table of values

List of values