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.

A221202 Number of 3Xn arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, with no occupancy greater than 2.

Table of values

n a(n)
1 0
2 49
3 46
4 9025
5 58700
6 2518569
7 32085376
8 848789956
9 14068757692
10 311366232004
11 5733258186854
12 118412678934081
13 2273843945394922
14 45702294155340601
15 892403786998151272
16 17744284197389113081
17 348794591561701410272

List of values

[0, 49, 46, 9025, 58700, 2518569, 32085376, 848789956, 14068757692, 311366232004, 5733258186854, 118412678934081, 2273843945394922, 45702294155340601, 892403786998151272, 17744284197389113081, 348794591561701410272]