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.

A230604 Smallest number whose square has more than n digits and begins and ends with the same n digits.

Table of values

n a(n)
1 11
2 173
3 264
4 16262
5 193744
6 238165
7 38981039
8 112791955
9 1580178016
10 1052631579
11 30762132977
12 15020242915
13 14451789007487
14 10909090909091
15 1242844268897055
16 1001889106154509
17 4024018444782046
18 10018891061545090
19 11678332116788271168
20 102040816316530612245
21 139009056141395353279
22 1128182832632197435939

List of values

[11, 173, 264, 16262, 193744, 238165, 38981039, 112791955, 1580178016, 1052631579, 30762132977, 15020242915, 14451789007487, 10909090909091, 1242844268897055, 1001889106154509, 4024018444782046, 10018891061545090, 11678332116788271168, 102040816316530612245, 139009056141395353279, 1128182832632197435939]

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

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