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.

A203407 T(n,k)=Number of (n+2)X(k+2) binary arrays avoiding patterns 000 and 111 in rows and columns.

Table of values

n a(n)
1 102
2 378
3 378
4 1260
5 2030
6 1260
7 4374
8 9484
9 9484
10 4374
11 14946
12 46746
13 60232
14 46746
15 14946
16 51384
17 225654
18 408432
19 408432
20 225654
21 51384
22 176238
23 1098136
24 2699464
25 3858082
26 2699464
27 1098136
28 176238
29 605022
30 5327258
31 18021052
32 35345798

List of values

[102, 378, 378, 1260, 2030, 1260, 4374, 9484, 9484, 4374, 14946, 46746, 60232, 46746, 14946, 51384, 225654, 408432, 408432, 225654, 51384, 176238, 1098136, 2699464, 3858082, 2699464, 1098136, 176238, 605022, 5327258, 18021052, 35345798]

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

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