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.

A321064 Number of ordered pairs (p,q) of permutations of [n] with equal up-down signatures and p(1)=q(1)=8.

Table of values

n a(n)
8 654424
9 19209584
10 769534688
11 39729927744
12 2548520444480
13 197890932247680
14 18237517555977472
15 1964023269922621952
16 244043425473888612352
17 34621419911316556017664
18 5557654485553447834816512
19 1001744885342172367869042688
20 201381195927539873971774119936

List of values

[654424, 19209584, 769534688, 39729927744, 2548520444480, 197890932247680, 18237517555977472, 1964023269922621952, 244043425473888612352, 34621419911316556017664, 5557654485553447834816512, 1001744885342172367869042688, 201381195927539873971774119936]

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

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