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.

A316395 Number of permutations p of [n] such that the up-down signature of 0,p has nonnegative partial sums with a maximal value of eight.

Table of values

n a(n)
8 1
9 8
10 1040
11 9468
12 507355
13 5313447
14 214378961
15 2571977379
16 92953037066
17 1265907917962
18 44038999833044
19 674142774632948
20 23379215615715958
21 398561935596289153
22 14037530250073013445
23 264291741199540446059
24 9551899031473405653870
25 197148463934806397523934

List of values

[1, 8, 1040, 9468, 507355, 5313447, 214378961, 2571977379, 92953037066, 1265907917962, 44038999833044, 674142774632948, 23379215615715958, 398561935596289153, 14037530250073013445, 264291741199540446059, 9551899031473405653870, 197148463934806397523934]

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

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