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.

A222515 Number of 7Xn 0..1 arrays with exactly floor(7Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..1 order.

Table of values

n a(n)
1 0
2 144
3 1335
4 15420
5 128889
6 2220730
7 19892241
8 385142640
9 3707833063
10 76288704212
11 767768563690
12 16265595620923
13 167593171246145
14 3601551682848558
15 37565287343451014
16 813220525871238420

List of values

[0, 144, 1335, 15420, 128889, 2220730, 19892241, 385142640, 3707833063, 76288704212, 767768563690, 16265595620923, 167593171246145, 3601551682848558, 37565287343451014, 813220525871238420]

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

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