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.

A206500 Number of nX3 0..7 arrays with no element equal to another within a city block distance of two, and new values 0..7 introduced in row major order.

Table of values

n a(n)
1 1
2 4
3 65
4 3130
5 178998
6 10502458
7 618242826
8 36410671102
9 2144479610070
10 126304554589462
11 7439032094765766
12 438141046109721622
13 25805450786659366998
14 1519878816318690262678
15 89517196729004371783830

List of values

[1, 4, 65, 3130, 178998, 10502458, 618242826, 36410671102, 2144479610070, 126304554589462, 7439032094765766, 438141046109721622, 25805450786659366998, 1519878816318690262678, 89517196729004371783830]

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

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