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.

A269217 Number of 4Xn 0..3 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling three exactly once.

Table of values

n a(n)
1 0
2 11424
3 361728
4 12548544
5 394072704
6 11985002256
7 354189986208
8 10261769266944
9 292749231337728
10 8250573640526208
11 230241360762467712
12 6372885696329678304
13 175188945893347242144
14 4787785430572600575216

List of values

[0, 11424, 361728, 12548544, 394072704, 11985002256, 354189986208, 10261769266944, 292749231337728, 8250573640526208, 230241360762467712, 6372885696329678304, 175188945893347242144, 4787785430572600575216]

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

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