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.

A302529 Number of 3Xn 0..1 arrays with every element equal to 1, 2, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 0
2 10
3 28
4 42
5 100
6 290
7 730
8 1700
9 4246
10 10758
11 26632
12 65846
13 164130
14 408716
15 1015998
16 2527374
17 6288152
18 15643694
19 38924730
20 96845564
21 240934118
22 599472054
23 1491590968
24 3711076182
25 9233281458
26 22973573260
27 57160260398
28 142218013758

List of values

[0, 10, 28, 42, 100, 290, 730, 1700, 4246, 10758, 26632, 65846, 164130, 408716, 1015998, 2527374, 6288152, 15643694, 38924730, 96845564, 240934118, 599472054, 1491590968, 3711076182, 9233281458, 22973573260, 57160260398, 142218013758]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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