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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.

A189439 Number of 7Xn array permutations with each element not moving, or moving one space N, SW or SE.

Table of values

n a(n)
1 1
2 85
3 1245
4 26589
5 493941
6 9557077
7 181540773
8 3467525301
9 66045131269
10 1258981901653
11 23988387057381
12 457127606313333
13 8710469146675973
14 165979359956189589
15 3162723963901817637
16 60265641669988070325

List of values

[1, 85, 1245, 26589, 493941, 9557077, 181540773, 3467525301, 66045131269, 1258981901653, 23988387057381, 457127606313333, 8710469146675973, 165979359956189589, 3162723963901817637, 60265641669988070325]

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

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