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.

A346204 a(n) is the number of permutations on [n] with at least one strong fixed point and at least one small descent.

Table of values

n a(n)
1 0
2 0
3 2
4 5
5 24
6 128
7 795
8 5686
9 46090
10 418519
11 4213098
12 46595650
13 561773033
14 7333741536
15 103065052300
16 1551392868821
17 24902155206164
18 424588270621876
19 7663358926666175
20 145967769353476594
21 2926073829112697318
22 61577929208485406331
23 1357369100658321844470
24 31276096500003460511422

List of values

[0, 0, 2, 5, 24, 128, 795, 5686, 46090, 418519, 4213098, 46595650, 561773033, 7333741536, 103065052300, 1551392868821, 24902155206164, 424588270621876, 7663358926666175, 145967769353476594, 2926073829112697318, 61577929208485406331, 1357369100658321844470, 31276096500003460511422]

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

Content is available under The OEIS End-User License Agreement.