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.

A180192 Triangle read by rows: T(n,k) is the number of permutations of [n] having k fixed blocks.

Table of values

n a(n)
0 1
1 0
2 1
3 1
4 1
5 2
6 4
7 0
8 9
9 12
10 3
11 44
12 57
13 18
14 1
15 265
16 321
17 123
18 11
19 1854
20 2176
21 888
22 120
23 2
24 14833
25 17008
26 7218
27 1208
28 53
29 133496
30 150505
31 65460
32 12550
33 860
34 9
35 1334961
36 1485465
37 657690
38 137970
39 12405
40 309
41 14684570
42 16170036
43 7257240
44 1623440

List of values

[1, 0, 1, 1, 1, 2, 4, 0, 9, 12, 3, 44, 57, 18, 1, 265, 321, 123, 11, 1854, 2176, 888, 120, 2, 14833, 17008, 7218, 1208, 53, 133496, 150505, 65460, 12550, 860, 9, 1334961, 1485465, 657690, 137970, 12405, 309, 14684570, 16170036, 7257240, 1623440]