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.

A186213 Number of (n+1)X4 0..2 arrays with every 2X2 subblock determinant equal to some horizontal or vertical neighbor 2X2 subblock determinant.

Table of values

n a(n)
1 609
2 18873
3 308593
4 6275745
5 116461359
6 2259545215
7 43035959317
8 826432933951
9 15812881574729
10 303053537534437
11 5803938965263449
12 111189559377323685
13 2129829613338983271
14 40799287763726714069
15 781535113579919280543

List of values

[609, 18873, 308593, 6275745, 116461359, 2259545215, 43035959317, 826432933951, 15812881574729, 303053537534437, 5803938965263449, 111189559377323685, 2129829613338983271, 40799287763726714069, 781535113579919280543]

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

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