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.

A266104 Number of 4Xn integer arrays with each element equal to the number of horizontal and antidiagonal neighbors exactly one smaller than itself.

Table of values

n a(n)
1 1
2 39
3 230
4 929
5 6307
6 52171
7 371130
8 2568565
9 18322421
10 129531126
11 926299920
12 6712699992
13 48087248218
14 341400959047
15 2440466698929
16 17538694281014
17 125725413376414
18 899035671334963
19 6432936252126858
20 46077832832481217

List of values

[1, 39, 230, 929, 6307, 52171, 371130, 2568565, 18322421, 129531126, 926299920, 6712699992, 48087248218, 341400959047, 2440466698929, 17538694281014, 125725413376414, 899035671334963, 6432936252126858, 46077832832481217]

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

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