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.

A196432 Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,1,0,3,4 for x=0,1,2,3,4.

Table of values

n a(n)
1 4
2 20
3 75
4 314
5 1283
6 5311
7 21803
8 89640
9 369032
10 1517961
11 6244222
12 25688677
13 105682189
14 434759457
15 1788546806
16 7357898836
17 30269531965
18 124525282462
19 512282735741
20 2107472161705
21 8669896311631
22 35666951338042
23 146729718668682

List of values

[4, 20, 75, 314, 1283, 5311, 21803, 89640, 369032, 1517961, 6244222, 25688677, 105682189, 434759457, 1788546806, 7357898836, 30269531965, 124525282462, 512282735741, 2107472161705, 8669896311631, 35666951338042, 146729718668682]

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

Content is available under The OEIS End-User License Agreement.