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.

A214015 Number of permutations A(n,k) in S_n with longest increasing subsequence of length <= k; square array A(n,k), n>=0, k>=0, read by antidiagonals.

Table of values

n a(n)
0 1
1 1
2 0
3 1
4 1
5 0
6 1
7 1
8 1
9 0
10 1
11 1
12 2
13 1
14 0
15 1
16 1
17 2
18 5
19 1
20 0
21 1
22 1
23 2
24 6
25 14
26 1
27 0
28 1
29 1
30 2
31 6
32 23
33 42
34 1
35 0
36 1
37 1
38 2
39 6
40 24
41 103
42 132
43 1
44 0
45 1
46 1
47 2
48 6
49 24
50 119
51 513
52 429
53 1
54 0
55 1
56 1
57 2
58 6
59 24
60 120
61 694
62 2761
63 1430
64 1
65 0
66 1
67 1
68 2
69 6
70 24
71 120
72 719
73 4582
74 15767
75 4862
76 1
77 0

List of values

[1, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, 1, 2, 1, 0, 1, 1, 2, 5, 1, 0, 1, 1, 2, 6, 14, 1, 0, 1, 1, 2, 6, 23, 42, 1, 0, 1, 1, 2, 6, 24, 103, 132, 1, 0, 1, 1, 2, 6, 24, 119, 513, 429, 1, 0, 1, 1, 2, 6, 24, 120, 694, 2761, 1430, 1, 0, 1, 1, 2, 6, 24, 120, 719, 4582, 15767, 4862, 1, 0]