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.

A212041 Number of lower triangular n X n arrays colored with integers 0 upwards introduced in row major order, with no element equal to any element within a city block distance of two, and containing the value n(n+1)/2-4.

Table of values

n a(n)
1 0
2 0
3 5
4 319
5 14949
6 253072
7 2326567
8 14516200
9 69305994
10 271885024
11 917364452
12 2746402607
13 7459357270

List of values

[0, 0, 5, 319, 14949, 253072, 2326567, 14516200, 69305994, 271885024, 917364452, 2746402607, 7459357270]

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

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