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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.

A230341 Number of permutations of [2n] in which the longest increasing run has length n.

Table of values

n a(n)
0 1
1 1
2 16
3 293
4 5811
5 133669
6 3574957
7 109546009
8 3788091451
9 145957544981
10 6201593613645
11 288084015576169
12 14525808779580645
13 790129980885855401
14 46120599397152203401
15 2875600728737862162481
16 190740227037467026439611
17 13411608375592255857753781

List of values

[1, 1, 16, 293, 5811, 133669, 3574957, 109546009, 3788091451, 145957544981, 6201593613645, 288084015576169, 14525808779580645, 790129980885855401, 46120599397152203401, 2875600728737862162481, 190740227037467026439611, 13411608375592255857753781]

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

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