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.

A274894 Number of nX7 0..2 arrays with no element equal to any value at offset (0,-1) (-1,-1) or (-2,0) and new values introduced in order 0..2.

Table of values

n a(n)
1 32
2 972
3 465
4 2291
5 10337
6 49697
7 237807
8 1143185
9 5539989
10 26833885
11 130079497
12 632358111
13 3069896886
14 14919608999
15 72537188422
16 352492355625
17 1713947371548
18 8332597817985
19 40508772974972
20 196969575853783
21 957632906229433

List of values

[32, 972, 465, 2291, 10337, 49697, 237807, 1143185, 5539989, 26833885, 130079497, 632358111, 3069896886, 14919608999, 72537188422, 352492355625, 1713947371548, 8332597817985, 40508772974972, 196969575853783, 957632906229433]