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.

A189900 Number of nX4 binary arrays without the pattern 0 0 1 1 diagonally, vertically, antidiagonally or horizontally.

Table of values

n a(n)
1 15
2 225
3 3375
4 35656
5 377517
6 3810503
7 36890502
8 354894796
9 3368920072
10 31765314572
11 298643477857
12 2799075682549
13 26196661596588
14 244952250115880
15 2288817676141909
16 21378736239048787
17 199638668209430098

List of values

[15, 225, 3375, 35656, 377517, 3810503, 36890502, 354894796, 3368920072, 31765314572, 298643477857, 2799075682549, 26196661596588, 244952250115880, 2288817676141909, 21378736239048787, 199638668209430098]

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

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