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.

A267479 Number A(n,k) of words on {1,1,2,2,...,n,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 6
13 1
14 0
15 1
16 1
17 6
18 43
19 1
20 0
21 1
22 1
23 6
24 90
25 352
26 1
27 0
28 1
29 1
30 6
31 90
32 1879
33 3114
34 1
35 0
36 1
37 1
38 6
39 90
40 2520
41 47024
42 29004
43 1
44 0
45 1
46 1
47 6
48 90
49 2520
50 102011
51 1331664
52 280221
53 1
54 0
55 1
56 1
57 6
58 90
59 2520
60 113400
61 5176504
62 41250519
63 2782476
64 1
65 0

List of values

[1, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, 1, 6, 1, 0, 1, 1, 6, 43, 1, 0, 1, 1, 6, 90, 352, 1, 0, 1, 1, 6, 90, 1879, 3114, 1, 0, 1, 1, 6, 90, 2520, 47024, 29004, 1, 0, 1, 1, 6, 90, 2520, 102011, 1331664, 280221, 1, 0, 1, 1, 6, 90, 2520, 113400, 5176504, 41250519, 2782476, 1, 0]