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.

A199980 Primes whose multiplicative digital root is 2.

Table of values

n a(n)
1 2
2 37
3 43
4 73
5 137
6 173
7 211
8 223
9 317
10 367
11 389
12 431
13 673
14 827
15 839
16 929
17 983
18 1223
19 1279
20 1297
21 1367
22 1447
23 1621
24 1637
25 1693
26 1999
27 2111
28 2161
29 2179
30 2213
31 2269
32 2339
33 2393
34 2663
35 2699
36 2719
37 2791
38 2917
39 2969
40 2971
41 3167
42 3169
43 3221
44 3329
45 3463
46 3499
47 3617

List of values

[2, 37, 43, 73, 137, 173, 211, 223, 317, 367, 389, 431, 673, 827, 839, 929, 983, 1223, 1279, 1297, 1367, 1447, 1621, 1637, 1693, 1999, 2111, 2161, 2179, 2213, 2269, 2339, 2393, 2663, 2699, 2719, 2791, 2917, 2969, 2971, 3167, 3169, 3221, 3329, 3463, 3499, 3617]

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

Content is available under The OEIS End-User License Agreement.