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.

A207911 Number of 6Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 0 1 1 vertically.

Table of values

n a(n)
1 18
2 324
3 1278
4 5041
5 39831
6 314721
7 1726758
8 9474084
9 62431074
10 411400089
11 2464567047
12 14764437081
13 92881236582
14 584304302404
15 3583711091042
16 21979959981841
17 136591044276099
18 848823810045561
19 5238992009252400

List of values

[18, 324, 1278, 5041, 39831, 314721, 1726758, 9474084, 62431074, 411400089, 2464567047, 14764437081, 92881236582, 584304302404, 3583711091042, 21979959981841, 136591044276099, 848823810045561, 5238992009252400]

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

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