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.

A335710 The smallest number on a square (Ulam) spiral in a 2D grid such that n steps in one of the four axial directions leads to each visited number sharing a common factor greater than 1 with the previous visited number.

Table of values

n a(n)
0 1
1 3
2 30
3 1235
4 2439
5 90000
6 88805
7 4330458
8 4322139
9 22001763
10 21983004
11 1868098088
12 2436807593

List of values

[1, 3, 30, 1235, 2439, 90000, 88805, 4330458, 4322139, 22001763, 21983004, 1868098088, 2436807593]

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

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