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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.

A206247 Number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock having zero permanent.

Table of values

n a(n)
1 49
2 8029
3 1364224
4 4556324929
5 14139111560401
6 848170637644693504
7 48673249000646115009649
8 50198078741005740094898080285
9 52964434709981480280861081128206336

List of values

[49, 8029, 1364224, 4556324929, 14139111560401, 848170637644693504, 48673249000646115009649, 50198078741005740094898080285, 52964434709981480280861081128206336]

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

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