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.

A301956 Number of 7Xn 0..1 arrays with every element equal to 1, 2 or 3 horizontally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 0
2 233
3 5820
4 439078
5 21418808
6 1427656268
7 86143630040
8 5308792667591
9 324469928188515
10 19912146679826809
11 1220249427475855637
12 74810226305531953416
13 4585754748793488994754
14 281114995706301373466905

List of values

[0, 233, 5820, 439078, 21418808, 1427656268, 86143630040, 5308792667591, 324469928188515, 19912146679826809, 1220249427475855637, 74810226305531953416, 4585754748793488994754, 281114995706301373466905]

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

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