cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A192618 Prime powers p^k with even exponents k > 0 such that (1 + p^k)/2 is prime.

Table of values

n a(n)
1 9
2 25
3 81
4 121
5 361
6 625
7 841
8 2401
9 3481
10 3721
11 5041
12 6241
13 10201
14 14641
15 17161
16 19321
17 28561
18 32761
19 39601
20 73441
21 83521
22 121801
23 143641
24 167281
25 201601
26 212521
27 271441
28 279841
29 323761
30 326041
31 398161
32 410881
33 436921
34 546121
35 564001
36 674041

List of values

[9, 25, 81, 121, 361, 625, 841, 2401, 3481, 3721, 5041, 6241, 10201, 14641, 17161, 19321, 28561, 32761, 39601, 73441, 83521, 121801, 143641, 167281, 201601, 212521, 271441, 279841, 323761, 326041, 398161, 410881, 436921, 546121, 564001, 674041]