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.

A181213 Number of n X n binary matrices with no three 1's adjacent in a line diagonally or antidiagonally.

Table of values

n a(n)
1 2
2 16
3 400
4 28561
5 7133488
6 5037592576
7 11494250657760
8 81903288018125025
9 1774095560440527819780
10 120560883729040740095954944
11 25387802734116842287569948104640
12 16523941893729018365186706701633818689

List of values

[2, 16, 400, 28561, 7133488, 5037592576, 11494250657760, 81903288018125025, 1774095560440527819780, 120560883729040740095954944, 25387802734116842287569948104640, 16523941893729018365186706701633818689]

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

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