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.

A208254 Number of n X 4 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than one of its immediate leftward or upward neighbors.

Table of values

n a(n)
1 14
2 768
3 43344
4 2445264
5 137947632
6 7782199824
7 439026252912
8 24767296501776
9 1397226183866736
10 78823339024454928
11 4446752320207192176
12 250859789016717819408
13 14152043831975777230704
14 798375640062491402594064

List of values

[14, 768, 43344, 2445264, 137947632, 7782199824, 439026252912, 24767296501776, 1397226183866736, 78823339024454928, 4446752320207192176, 250859789016717819408, 14152043831975777230704, 798375640062491402594064]

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

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