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.

A194536 Number of lower triangles of an n X n 0..4 array with new values introduced in row major order 0..4 and no element equal to more than one horizontal or vertical neighbor.

Table of values

n a(n)
1 1
2 4
3 131
4 43785
5 79201795
6 627974590650
7 21399815343394998
8 3132305932642809585983
9 1969210116072259125767299138

List of values

[1, 4, 131, 43785, 79201795, 627974590650, 21399815343394998, 3132305932642809585983, 1969210116072259125767299138]

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

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