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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.

A140770 3D analog of A081113: the number of (n-1)-step paths a 3D chess king can make starting from one face of the n X n X n cube to the opposite one.

Table of values

n a(n)
1 1
2 16
3 289
4 4624
5 67081
6 902500
7 11471769
8 139570596
9 1640493009
10 18754206916
11 209576262025
12 2298031637476
13 24798178969729
14 263962539461776
15 2776718023652329
16 28909790108979264
17 298278580556192769
18 3052900712959977636
19 31023767417676585561
20 313247762072931012804

List of values

[1, 16, 289, 4624, 67081, 902500, 11471769, 139570596, 1640493009, 18754206916, 209576262025, 2298031637476, 24798178969729, 263962539461776, 2776718023652329, 28909790108979264, 298278580556192769, 3052900712959977636, 31023767417676585561, 313247762072931012804]

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

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