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.

A217162 a(n) is the least value of k such that the decimal expansion of n^k contains seven consecutive identical digits.

Table of values

n a(n)
2 972
3 2124
4 486
5 2786
6 1503
7 1961
8 324
9 1062
10 7
11 1323
12 1938
13 512
14 1053
15 2600
16 243
17 2474
18 1486
19 940
20 7
21 1085
22 1068
23 238
24 2908
25 1393
26 699
27 708
28 704
29 1566
30 7
31 286
32 1711
33 935
34 2225
35 1190
36 1357
37 692
38 1182
39 448
40 7
41 885
42 1349
43 815
44 647
45 1675
46 1131
47 548
48 333
49 1154
50 7

List of values

[972, 2124, 486, 2786, 1503, 1961, 324, 1062, 7, 1323, 1938, 512, 1053, 2600, 243, 2474, 1486, 940, 7, 1085, 1068, 238, 2908, 1393, 699, 708, 704, 1566, 7, 286, 1711, 935, 2225, 1190, 1357, 692, 1182, 448, 7, 885, 1349, 815, 647, 1675, 1131, 548, 333, 1154, 7]