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.

A194609 Half the number of lower triangles of an (n+1) X (n+1) 0..2 array with no element equal to the average of its horizontal and vertical neighbors.

Table of values

n a(n)
1 5
2 96
3 4322
4 571364
5 205801866
6 202803700252
7 547917448108462
8 4059864930297777162
9 82468548660331834255159
10 4592574521519240269995632810
11 701184800636550713667143286769980

List of values

[5, 96, 4322, 571364, 205801866, 202803700252, 547917448108462, 4059864930297777162, 82468548660331834255159, 4592574521519240269995632810, 701184800636550713667143286769980]