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.

A302145 Number of n X n 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 1
2 1
3 4
4 17
5 289
6 15999
7 1728734
8 476725579
9 338788296901
10 600144995821877
11 2721126689318370799
12 31005436248594896441733
13 885614872309613750483721526
14 63247599647658758935122240950370
15 11261549689102506355299411976654023890

List of values

[1, 1, 4, 17, 289, 15999, 1728734, 476725579, 338788296901, 600144995821877, 2721126689318370799, 31005436248594896441733, 885614872309613750483721526, 63247599647658758935122240950370, 11261549689102506355299411976654023890]

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

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