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.

A222449 Number of n X n 0..1 arrays with exactly floor(n X n/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..1 order.

Table of values

n a(n)
1 1
2 0
3 2
4 101
5 1847
6 161779
7 17977932
8 8774928190
9 4427986390487
10 10016765131595843

List of values

[1, 0, 2, 101, 1847, 161779, 17977932, 8774928190, 4427986390487, 10016765131595843]

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

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