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.

A231256 Number of (n+1)X(n+1) 0..2 arrays with no element unequal to a strict majority of its horizontal and antidiagonal neighbors, with values 0..2 introduced in row major order.

Table of values

n a(n)
1 2
2 15
3 304
4 19503
5 3130708
6 1350570015
7 1496478177166
8 4339950773804841
9 32510127329051575349
10 631327524382609726232392
11 31694391041907948471880253567

List of values

[2, 15, 304, 19503, 3130708, 1350570015, 1496478177166, 4339950773804841, 32510127329051575349, 631327524382609726232392, 31694391041907948471880253567]