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.

A207164 Number of n X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 0 1 vertically.

Table of values

n a(n)
1 2
2 16
3 90
4 603
5 3445
6 15789
7 98224
8 645217
9 3227100
10 18747520
11 128798244
12 720878886
13 4180036645
14 28917238756
15 176708726320
16 1057330250552
17 7322809072734
18 47678383274385
19 297647051017140
20 2072720881428948

List of values

[2, 16, 90, 603, 3445, 15789, 98224, 645217, 3227100, 18747520, 128798244, 720878886, 4180036645, 28917238756, 176708726320, 1057330250552, 7322809072734, 47678383274385, 297647051017140, 2072720881428948]

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

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