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.

A266096 Number of n X 3 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 4
2 13
3 64
4 230
5 1012
6 3928
7 16428
8 65736
9 269908
10 1091720
11 4454304
12 18082796
13 73622676
14 299247292
15 1217498296
16 4950677020
17 20137255328
18 81894658192
19 333086633092
20 1354665687204
21 5509630157292
22 22408041160240
23 91136102570276

List of values

[4, 13, 64, 230, 1012, 3928, 16428, 65736, 269908, 1091720, 4454304, 18082796, 73622676, 299247292, 1217498296, 4950677020, 20137255328, 81894658192, 333086633092, 1354665687204, 5509630157292, 22408041160240, 91136102570276]

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

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