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.

A119998 a(n) is the smallest positive integer whose square starts with (at least) n identical digits.

Table of values

n a(n)
1 1
2 15
3 149
4 2357
5 10541
6 57735
7 745356
8 1490712
9 182574186
10 298142397
11 298142397
12 1490711985
13 1490711985
14 10540925533895
15 74535599249993
16 105409255338946
17 7453559924999299
18 14907119849998598
19 471404520791031683
20 7453559924999298988

List of values

[1, 15, 149, 2357, 10541, 57735, 745356, 1490712, 182574186, 298142397, 298142397, 1490711985, 1490711985, 10540925533895, 74535599249993, 105409255338946, 7453559924999299, 14907119849998598, 471404520791031683, 7453559924999298988]

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

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