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.

A222678 Number of nX7 0..3 arrays with no more than floor(nX7/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order.

Table of values

n a(n)
1 17
2 359
3 6463
4 687222
5 20997839
6 3254033272
7 169563633880
8 40055385632924
9 2635079897572698
10 708119862583697101
11 48390899167019147315

List of values

[17, 359, 6463, 687222, 20997839, 3254033272, 169563633880, 40055385632924, 2635079897572698, 708119862583697101, 48390899167019147315]

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

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