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.

A070027 Prime numbers whose initial, all intermediate and final iterated sums of digits are primes.

Table of values

n a(n)
1 2
2 3
3 5
4 7
5 11
6 23
7 29
8 41
9 43
10 47
11 61
12 83
13 101
14 113
15 131
16 137
17 151
18 173
19 191
20 223
21 227
22 241
23 263
24 281
25 311
26 313
27 317
28 331
29 353
30 401
31 421
32 443
33 461
34 599
35 601
36 641
37 797
38 821
39 887
40 911
41 977
42 1013
43 1019
44 1031
45 1033
46 1051
47 1091
48 1103
49 1109
50 1123
51 1163
52 1181
53 1213

List of values

[2, 3, 5, 7, 11, 23, 29, 41, 43, 47, 61, 83, 101, 113, 131, 137, 151, 173, 191, 223, 227, 241, 263, 281, 311, 313, 317, 331, 353, 401, 421, 443, 461, 599, 601, 641, 797, 821, 887, 911, 977, 1013, 1019, 1031, 1033, 1051, 1091, 1103, 1109, 1123, 1163, 1181, 1213]