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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.

A263052 Number of (n+1)X(n+1) 0..1 arrays with each row and column not divisible by 3, read as a binary number with top and left being the most significant bits.

Table of values

n a(n)
1 2
2 33
3 1666
4 498597
5 439260642
6 1825928130193
7 26380510465997186
8 1607516667474074649381
9 373842629115554331580791202
10 353418497958270475251697468005873

List of values

[2, 33, 1666, 498597, 439260642, 1825928130193, 26380510465997186, 1607516667474074649381, 373842629115554331580791202, 353418497958270475251697468005873]

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

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