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.

A146123 Number of n X n arrays of squares of integers with every (n-3) X (n-3) subblock summing to 4 and every element equal to at least one neighbor.

Table of values

n a(n)
5 1
6 540
7 4120
8 12188
9 31000
10 67216
11 129464
12 228136
13 375388
14 585140
15 873076
16 1256644
17 1755056
18 2389288
19 3182080
20 4157936
21 5343124
22 6765676
23 8455388
24 10443820
25 12764296
26 15451904

List of values

[1, 540, 4120, 12188, 31000, 67216, 129464, 228136, 375388, 585140, 873076, 1256644, 1755056, 2389288, 3182080, 4157936, 5343124, 6765676, 8455388, 10443820, 12764296, 15451904]