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.

A316392 Number of permutations p of [n] such that the up-down signature of 0,p has nonnegative partial sums with a maximal value of five.

Table of values

n a(n)
5 1
6 5
7 129
8 819
9 16066
10 127538
11 2423226
12 23367449
13 459383574
14 5246611332
15 109138956326
16 1446115120862
17 32069014233249
18 484780196858918
19 11478459399841878
20 195255855453716821
21 4931560739013573590
22 93326559046408832001
23 2509294817575539112099

List of values

[1, 5, 129, 819, 16066, 127538, 2423226, 23367449, 459383574, 5246611332, 109138956326, 1446115120862, 32069014233249, 484780196858918, 11478459399841878, 195255855453716821, 4931560739013573590, 93326559046408832001, 2509294817575539112099]

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

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