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.

A365468 Number of n X n nonnegative integer arrays with upper left entry 0, lower right entry n - 5, every value within 4 of its king-move distance from the upper left, and every value increasing by 0 or 1 with every step right, diagonally southeast, or down.

Table of values

n a(n)
1 0
2 0
3 0
4 0
5 1
6 251
7 35176
8 4105312
9 466029138
10 54944041476
11 6886218018445
12 920364154307990
13 130498580283240363
14 19482086451147555715
15 3039784702880850466554
16 492560752706827973431360
17 82451674043232981553367317
18 14196926753609833253834234271

List of values

[0, 0, 0, 0, 1, 251, 35176, 4105312, 466029138, 54944041476, 6886218018445, 920364154307990, 130498580283240363, 19482086451147555715, 3039784702880850466554, 492560752706827973431360, 82451674043232981553367317, 14196926753609833253834234271]