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.

A318073 Number of nX6 0..1 arrays with every element unequal to 0, 1, 2 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 32
2 89
3 179
4 372
5 854
6 3029
7 9966
8 31057
9 102906
10 339938
11 1115341
12 3686471
13 12202268
14 40357737
15 133516203
16 442017482
17 1463416356
18 4844264732
19 16038582879
20 53104714108
21 175822278334
22 582142483984
23 1927505047124
24 6381987620459

List of values

[32, 89, 179, 372, 854, 3029, 9966, 31057, 102906, 339938, 1115341, 3686471, 12202268, 40357737, 133516203, 442017482, 1463416356, 4844264732, 16038582879, 53104714108, 175822278334, 582142483984, 1927505047124, 6381987620459]

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

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