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.

A199652 Number of nX5 0..2 arrays with values 0..2 introduced in row major order and each element equal to no more than two horizontal and vertical neighbors.

Table of values

n a(n)
1 41
2 8037
3 1357484
4 230693158
5 39209840355
6 6663970316970
7 1132589231853096
8 192491652879392515
9 32715334199617664326
10 5560205218374521415185
11 944996676143473092852595
12 160608949278619262130353064

List of values

[41, 8037, 1357484, 230693158, 39209840355, 6663970316970, 1132589231853096, 192491652879392515, 32715334199617664326, 5560205218374521415185, 944996676143473092852595, 160608949278619262130353064]

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

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