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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.

A189645 Number of n X 4 array permutations with each element moving zero or one space horizontally, diagonally or antidiagonally.

Table of values

n a(n)
1 5
2 185
3 4277
4 107080
5 2631821
6 64890337
7 1598901325
8 39401919001
9 970964720320
10 23927183356745
11 589629702461885
12 14530053018698289
13 358059360274087325
14 8823540150072892232
15 217435624721745257829
16 5358195248586080351465

List of values

[5, 185, 4277, 107080, 2631821, 64890337, 1598901325, 39401919001, 970964720320, 23927183356745, 589629702461885, 14530053018698289, 358059360274087325, 8823540150072892232, 217435624721745257829, 5358195248586080351465]

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

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