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.

A270738 Numbers k such that 23*10^k - 7 is prime.

Table of values

n a(n)
1 1
2 2
3 3
4 6
5 8
6 12
7 18
8 19
9 30
10 65
11 77
12 126
13 353
14 541
15 576
16 723
17 777
18 1024
19 1194
20 1507
21 2379
22 2615
23 4008
24 4295
25 4495
26 4526
27 9996
28 10348
29 10673
30 14120
31 22350
32 70240
33 93116
34 122070
35 136225
36 183710
37 224232
38 234025
39 270799

List of values

[1, 2, 3, 6, 8, 12, 18, 19, 30, 65, 77, 126, 353, 541, 576, 723, 777, 1024, 1194, 1507, 2379, 2615, 4008, 4295, 4495, 4526, 9996, 10348, 10673, 14120, 22350, 70240, 93116, 122070, 136225, 183710, 224232, 234025, 270799]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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