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.

A222876 Number of nX6 0..3 arrays with no more than floor(nX6/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.

Table of values

n a(n)
1 131
2 399849
3 1340197778
4 4643150795564
5 16364046520925461
6 58365501277437736651
7 209946033151635587197031
8 760026285340633515213165141
9 2765078298066978400951570461522

List of values

[131, 399849, 1340197778, 4643150795564, 16364046520925461, 58365501277437736651, 209946033151635587197031, 760026285340633515213165141, 2765078298066978400951570461522]