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.

A370506 T(n,k) is the number permutations p of [n] that are j-dist-increasing for exactly k distinct values j in [n], where p is j-dist-increasing if j>=0 and p(i) for all i in [n-j]; triangle T(n,k), n>=0, 0<=k<=n, read by rows.

Table of values

n a(n)
0 1
1 0
2 1
3 0
4 1
5 1
6 0
7 3
8 2
9 1
10 0
11 11
12 8
13 4
14 1
15 0
16 55
17 38
18 19
19 7
20 1
21 0
22 319
23 228
24 110
25 50
26 12
27 1
28 0
29 2233
30 1574
31 775
32 322
33 115
34 20
35 1
36 0
37 17641
38 12524
39 6216
40 2611
41 1033
42 261
43 33
44 1
45 0
46 158769
47 112084
48 55692
49 23585
50 9103
51 3006
52 586
53 54
54 1
55 0
56 1578667
57 1119496
58 556754
59 238425
60 91764
61 33929
62 8372
63 1304
64 88
65 1

List of values

[1, 0, 1, 0, 1, 1, 0, 3, 2, 1, 0, 11, 8, 4, 1, 0, 55, 38, 19, 7, 1, 0, 319, 228, 110, 50, 12, 1, 0, 2233, 1574, 775, 322, 115, 20, 1, 0, 17641, 12524, 6216, 2611, 1033, 261, 33, 1, 0, 158769, 112084, 55692, 23585, 9103, 3006, 586, 54, 1, 0, 1578667, 1119496, 556754, 238425, 91764, 33929, 8372, 1304, 88, 1]