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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.

A206254 Number of (n+1)X8 0..3 arrays with every 2X2 subblock having zero permanent.

Table of values

n a(n)
1 1343281
2 6990799321
3 603269103616
4 1006239668280961
5 186370092021300625
6 173223627538782109696
7 48673249000646115009649
8 33073672641937525219176361
9 11681343800269067725781401600

List of values

[1343281, 6990799321, 603269103616, 1006239668280961, 186370092021300625, 173223627538782109696, 48673249000646115009649, 33073672641937525219176361, 11681343800269067725781401600]

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

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