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.

A321061 Number of ordered pairs (p,q) of permutations of [n] with equal up-down signatures and p(1)=q(1)=5.

Table of values

n a(n)
5 88
6 952
7 17008
8 438496
9 15214848
10 678914816
11 37727416576
12 2548520444480
13 205352644205568
14 19438574276705792
15 2134484763328610304
16 269000435778983860224
17 38553984887490450800640
18 6234291052542667315675136
19 1129460021283312750345682944

List of values

[88, 952, 17008, 438496, 15214848, 678914816, 37727416576, 2548520444480, 205352644205568, 19438574276705792, 2134484763328610304, 269000435778983860224, 38553984887490450800640, 6234291052542667315675136, 1129460021283312750345682944]

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

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