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.

A054214 Numbers n such that n concatenated with n-1 is a square.

Table of values

n a(n)
1 82
2 8242
3 9802
4 538277
5 998002
6 77837026
7 99980002
8 7922547265
9 8643251345
10 9223797610
11 9999800002
12 106710893290
13 453378226757
14 491023832065
15 945958034530
16 999998000002
17 11916002265170
18 15790977390245
19 24917378001937
20 25082758752026
21 36315251812570

List of values

[82, 8242, 9802, 538277, 998002, 77837026, 99980002, 7922547265, 8643251345, 9223797610, 9999800002, 106710893290, 453378226757, 491023832065, 945958034530, 999998000002, 11916002265170, 15790977390245, 24917378001937, 25082758752026, 36315251812570]