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.

A302307 Number of nX6 0..1 arrays with every element equal to 0, 1, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 13
2 113
3 121
4 663
5 1595
6 5715
7 18990
8 73663
9 312122
10 1468425
11 7435015
12 39732589
13 220413622
14 1252325938
15 7234253383
16 42220737525
17 248052641109
18 1463694696334
19 8660691810640
20 51336560128881
21 304650450122309
22 1809254624278226

List of values

[13, 113, 121, 663, 1595, 5715, 18990, 73663, 312122, 1468425, 7435015, 39732589, 220413622, 1252325938, 7234253383, 42220737525, 248052641109, 1463694696334, 8660691810640, 51336560128881, 304650450122309, 1809254624278226]

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

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