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.

A211913 Number of lower triangular n X n arrays colored with integers 0 upwards introduced in row major order, with no element equal to any horizontal, vertical, diagonal or antidiagonal neighbor, and containing the value n(n+1)/2-4.

Table of values

n a(n)
1 0
2 0
3 10
4 802
5 27963
6 394117
7 3243531
8 18826250
9 85484512
10 323341343
11 1061434357
12 3110902786
13 8308425940

List of values

[0, 0, 10, 802, 27963, 394117, 3243531, 18826250, 85484512, 323341343, 1061434357, 3110902786, 8308425940]

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

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