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.

A207169 T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 0 1 vertically.

Table of values

n a(n)
1 2
2 4
3 4
4 6
5 16
6 6
7 9
8 36
9 36
10 8
11 13
12 81
13 90
14 64
15 10
16 19
17 169
18 261
19 168
20 100
21 12
22 28
23 361
24 624
25 603
26 270
27 144
28 14
29 41
30 784
31 1482
32 1612
33 1161
34 396
35 196
36 16
37 60
38 1681
39 3808
40 3952
41 3445
42 1989
43 546
44 256
45 18
46 88
47 3600
48 9512
49 11452
50 8455
51 6513
52 3141
53 720
54 324
55 20
56 129
57 7744

List of values

[2, 4, 4, 6, 16, 6, 9, 36, 36, 8, 13, 81, 90, 64, 10, 19, 169, 261, 168, 100, 12, 28, 361, 624, 603, 270, 144, 14, 41, 784, 1482, 1612, 1161, 396, 196, 16, 60, 1681, 3808, 3952, 3445, 1989, 546, 256, 18, 88, 3600, 9512, 11452, 8455, 6513, 3141, 720, 324, 20, 129, 7744]

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

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