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.

A196945 Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,1,0,2,3 for x=0,1,2,3,4.

Table of values

n a(n)
1 4
2 38
3 210
4 1416
5 9199
6 60206
7 393585
8 2575161
9 16853437
10 110272832
11 721534069
12 4721192123
13 30892105126
14 202135973690
15 1322631911588
16 8654346869839
17 56627813612708
18 370531619063820
19 2424491930970999
20 15864128119739556

List of values

[4, 38, 210, 1416, 9199, 60206, 393585, 2575161, 16853437, 110272832, 721534069, 4721192123, 30892105126, 202135973690, 1322631911588, 8654346869839, 56627813612708, 370531619063820, 2424491930970999, 15864128119739556]

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

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