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.

A207390 Number of n X 7 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 1 1 0 vertically.

Table of values

n a(n)
1 31
2 961
3 6115
4 23071
5 65955
6 158217
7 335915
8 651531
9 1178343
10 2015377
11 3292963
12 5178919
13 7885387
14 11676345
15 16875819
16 23876819
17 33151023
18 45259233
19 60862627
20 80734831
21 105774835
22 137020777
23 175664619
24 223067739
25 280777463
26 350544561

List of values

[31, 961, 6115, 23071, 65955, 158217, 335915, 651531, 1178343, 2015377, 3292963, 5178919, 7885387, 11676345, 16875819, 23876819, 33151023, 45259233, 60862627, 80734831, 105774835, 137020777, 175664619, 223067739, 280777463, 350544561]

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

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