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.

A207363 Number of n X 3 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 0 1 1 vertically.

Table of values

n a(n)
1 6
2 36
3 90
4 225
5 420
6 784
7 1260
8 2025
9 2970
10 4356
11 6006
12 8281
13 10920
14 14400
15 18360
16 23409
17 29070
18 36100
19 43890
20 53361
21 63756
22 76176
23 89700
24 105625
25 122850
26 142884
27 164430
28 189225
29 215760
30 246016
31 278256
32 314721
33 353430
34 396900
35 442890
36 494209

List of values

[6, 36, 90, 225, 420, 784, 1260, 2025, 2970, 4356, 6006, 8281, 10920, 14400, 18360, 23409, 29070, 36100, 43890, 53361, 63756, 76176, 89700, 105625, 122850, 142884, 164430, 189225, 215760, 246016, 278256, 314721, 353430, 396900, 442890, 494209]

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

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