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.

A027677 When squared gives number composed of digits {1,4,6}.

Table of values

n a(n)
1 1
2 2
3 4
4 8
5 12
6 21
7 38
8 108
9 119
10 121
11 129
12 204
13 408
14 804
15 2538
16 3408
17 6642
18 12908
19 25771
20 78196
21 81619
22 333858
23 204000408
24 668164962
25 813118358
26 4018285038
27 12006850738
28 12694138988
29 12706943631
30 40182224262
31 40578463021
32 785153912392
33 1210019200121
34 1210150449796

List of values

[1, 2, 4, 8, 12, 21, 38, 108, 119, 121, 129, 204, 408, 804, 2538, 3408, 6642, 12908, 25771, 78196, 81619, 333858, 204000408, 668164962, 813118358, 4018285038, 12006850738, 12694138988, 12706943631, 40182224262, 40578463021, 785153912392, 1210019200121, 1210150449796]