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.

A194538 Number of lower triangles of an n X n 0..6 array with new values introduced in row major order 0..6 and no element equal to more than one horizontal or vertical neighbor.

Table of values

n a(n)
1 1
2 4
3 132
4 67377
5 543350470
6 40994098419294
7 21253155706215768591
8 71381360690596538575641162

List of values

[1, 4, 132, 67377, 543350470, 40994098419294, 21253155706215768591, 71381360690596538575641162]

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

Content is available under The OEIS End-User License Agreement.