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.

A206249 Number of (n+1) X 3 0..3 arrays with every 2 X 2 subblock having zero permanent.

Table of values

n a(n)
1 361
2 8029
3 99856
4 1718209
5 26512201
6 434613664
7 6990799321
8 113636628469
9 1841188465216
10 29885540089249
11 484822312979761
12 7867521981505504
13 127659187514359081
14 2071519703855856109
15 33613908262858076176

List of values

[361, 8029, 99856, 1718209, 26512201, 434613664, 6990799321, 113636628469, 1841188465216, 29885540089249, 484822312979761, 7867521981505504, 127659187514359081, 2071519703855856109, 33613908262858076176]

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

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