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.

A208861 Number of nX5 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than one of its immediate leftward or upward or left-upward diagonal neighbors.

Table of values

n a(n)
1 51
2 23047
3 12883280
4 7240366702
5 4071491223248
6 2289701830963879
7 1287681340443915644
8 724166398812363542260
9 407256849342915985761092
10 229033195050822330468202369
11 128803738036903910358389563556

List of values

[51, 23047, 12883280, 7240366702, 4071491223248, 2289701830963879, 1287681340443915644, 724166398812363542260, 407256849342915985761092, 229033195050822330468202369, 128803738036903910358389563556]

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

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