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.

A297295 Number of n X n 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 2 neighboring 1's.

Table of values

n a(n)
1 1
2 1
3 3
4 10
5 49
6 495
7 13504
8 629563
9 40753529
10 4162842319
11 790491998237
12 268041967942170
13 155466640607601204
14 159960976273554094907
15 300474954115694463716874
16 1003924486221768324971576564

List of values

[1, 1, 3, 10, 49, 495, 13504, 629563, 40753529, 4162842319, 790491998237, 268041967942170, 155466640607601204, 159960976273554094907, 300474954115694463716874, 1003924486221768324971576564]

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

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