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.

A196143 Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,0,4,1,2 for x=0,1,2,3,4.

Table of values

n a(n)
1 8
2 34
3 49
4 168
5 481
6 1031
7 2781
8 7666
9 19581
10 50767
11 133067
12 347285
13 908050
14 2376097
15 6205040
16 16210548
17 42388933
18 110845205
19 289736000
20 757344081
21 1979883152
22 5176072691
23 13531879986
24 35376145849
25 92481993251
26 241773334844

List of values

[8, 34, 49, 168, 481, 1031, 2781, 7666, 19581, 50767, 133067, 347285, 908050, 2376097, 6205040, 16210548, 42388933, 110845205, 289736000, 757344081, 1979883152, 5176072691, 13531879986, 35376145849, 92481993251, 241773334844]

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

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