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.

A230176 T(n,k)=Number of nXk 0..2 arrays x(i,j) with each element horizontally, vertically, diagonally or antidiagonally next to at least one element with value 2-x(i,j).

Table of values

n a(n)
1 0
2 3
3 3
4 3
5 27
6 3
7 9
8 193
9 193
10 9
11 15
12 1407
13 3787
14 1407
15 15
16 33
17 10211
18 78849
19 78849
20 10211
21 33
22 63
23 73417
24 1637019
25 4722977
26 1637019
27 73417
28 63
29 129
30 530771
31 33908253
32 284444079
33 284444079
34 33908253
35 530771
36 129
37 255
38 3841171
39 704822331

List of values

[0, 3, 3, 3, 27, 3, 9, 193, 193, 9, 15, 1407, 3787, 1407, 15, 33, 10211, 78849, 78849, 10211, 33, 63, 73417, 1637019, 4722977, 1637019, 73417, 63, 129, 530771, 33908253, 284444079, 284444079, 33908253, 530771, 129, 255, 3841171, 704822331]