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.

A380595 a(n) is the first nonsquarefree number k such that the n consecutive nonsquarefree numbers starting with k are in arithmetic progression.

Table of values

n a(n)
1 4
2 4
3 16
4 28
5 28
6 5050
7 6348
8 144946
9 3348550
10 221167422
11 221167422
12 47255689915
13 82462576220
14 1043460553364
15 79180770078548
16 3215226335143218
17 23742453640900972
18 125781000834058568

List of values

[4, 4, 16, 28, 28, 5050, 6348, 144946, 3348550, 221167422, 221167422, 47255689915, 82462576220, 1043460553364, 79180770078548, 3215226335143218, 23742453640900972, 125781000834058568]