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.

A302639 Number of 6Xn 0..1 arrays with every element equal to 0, 1, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 32
2 42
3 82
4 248
5 719
6 2262
7 6460
8 19799
9 59002
10 179668
11 535412
12 1618765
13 4863776
14 14679083
15 44118667
16 132955659
17 400197277
18 1205668487
19 3629343498
20 10930567358
21 32912798461
22 99120195646
23 298461584492
24 898783501386
25 2706487328339

List of values

[32, 42, 82, 248, 719, 2262, 6460, 19799, 59002, 179668, 535412, 1618765, 4863776, 14679083, 44118667, 132955659, 400197277, 1205668487, 3629343498, 10930567358, 32912798461, 99120195646, 298461584492, 898783501386, 2706487328339]