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.

A207584 Number of n X 3 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 1 1 vertically.

Table of values

n a(n)
1 6
2 36
3 60
4 144
5 312
6 612
7 1250
8 2516
9 4968
10 9796
11 19256
12 37740
13 73704
14 143810
15 280340
16 545664
17 1061676
18 2064584
19 4012968
20 7798252
21 15150258
22 29428972
23 57157720
24 111001924
25 215555184
26 418562876
27 812728688
28 1578038530
29 3063930012

List of values

[6, 36, 60, 144, 312, 612, 1250, 2516, 4968, 9796, 19256, 37740, 73704, 143810, 280340, 545664, 1061676, 2064584, 4012968, 7798252, 15150258, 29428972, 57157720, 111001924, 215555184, 418562876, 812728688, 1578038530, 3063930012]

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

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