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.

A222905 Number of nX7 0..3 arrays with no more than floor(nX7/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.

Table of values

n a(n)
1 17
2 1710
3 82020
4 21064292
5 1616042692
6 577820456398
7 51666240687220
8 19807159813457951
9 1817220105168370585
10 706854001296049850823
11 65258971099531300247508
12 25532711765112846282295184

List of values

[17, 1710, 82020, 21064292, 1616042692, 577820456398, 51666240687220, 19807159813457951, 1817220105168370585, 706854001296049850823, 65258971099531300247508, 25532711765112846282295184]

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

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