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.

A028845 Iterated product of digits of n is a nonzero square.

Table of values

n a(n)
1 1
2 4
3 9
4 11
5 14
6 19
7 22
8 27
9 33
10 39
11 41
12 72
13 89
14 91
15 93
16 98
17 111
18 114
19 119
20 122
21 127
22 133
23 139
24 141
25 172
26 189
27 191
28 193
29 198
30 212
31 217
32 221
33 249
34 266
35 271
36 277
37 294
38 313
39 319
40 331
41 333
42 338
43 346
44 364
45 379
46 383
47 391
48 397
49 411
50 429
51 436
52 463
53 492
54 626
55 634
56 643

List of values

[1, 4, 9, 11, 14, 19, 22, 27, 33, 39, 41, 72, 89, 91, 93, 98, 111, 114, 119, 122, 127, 133, 139, 141, 172, 189, 191, 193, 198, 212, 217, 221, 249, 266, 271, 277, 294, 313, 319, 331, 333, 338, 346, 364, 379, 383, 391, 397, 411, 429, 436, 463, 492, 626, 634, 643]