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.

A263974 Number of (2+1)X(n+1) arrays of permutations of 0..n*3+2 with each element having index change (+-,+-) 0,2 1,1 or 1,0.

Table of values

n a(n)
1 0
2 72
3 1817
4 10720
5 89472
6 1791696
7 27783305
8 317382472
9 3783068416
10 51756812704
11 698792225489
12 8925688199152
13 114042394336256
14 1490898399253328
15 19518200132035505
16 253177516072868896
17 3279883039710140160

List of values

[0, 72, 1817, 10720, 89472, 1791696, 27783305, 317382472, 3783068416, 51756812704, 698792225489, 8925688199152, 114042394336256, 1490898399253328, 19518200132035505, 253177516072868896, 3279883039710140160]

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

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