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.

A198657 Number of nX3 0..7 arrays with values 0..7 introduced in row major order and each element equal to at least one horizontal or vertical neighbor.

Table of values

n a(n)
1 1
2 14
3 185
4 3904
5 98467
6 3053286
7 109133049
8 4460603630
9 202661109307
10 10057569576034
11 533251017131222
12 29684104738808241
13 1708995821028336330
14 100671800330158890680
15 6020806089426293935506
16 363687165160204642974491

List of values

[1, 14, 185, 3904, 98467, 3053286, 109133049, 4460603630, 202661109307, 10057569576034, 533251017131222, 29684104738808241, 1708995821028336330, 100671800330158890680, 6020806089426293935506, 363687165160204642974491]

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

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