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.

A302947 Number of n X n 0..1 arrays with every element equal to 1, 2, 3, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 0
2 3
3 86
4 6531
5 2104533
6 2766909379
7 13578993819785
8 252836915021232264
9 18036285050227905448214
10 4921162186957679442128426852

List of values

[0, 3, 86, 6531, 2104533, 2766909379, 13578993819785, 252836915021232264, 18036285050227905448214, 4921162186957679442128426852]

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

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