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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.

A189438 Number of 6Xn array permutations with each element not moving, or moving one space N, SW or SE.

Table of values

n a(n)
1 1
2 41
3 367
4 4653
5 52241
6 606201
7 6944573
8 79826592
9 916320775
10 10522129613
11 120807652475
12 1387081546065
13 15925843986549
14 182854110096077
15 2099453348053203
16 24105043866210197
17 276763962980421232

List of values

[1, 41, 367, 4653, 52241, 606201, 6944573, 79826592, 916320775, 10522129613, 120807652475, 1387081546065, 15925843986549, 182854110096077, 2099453348053203, 24105043866210197, 276763962980421232]

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

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