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.

A289620 Triangle read by rows: T(n,r), 0 <= r <= n, is the number of idempotents of rank r in the twisted planar partition monoid PP_n^tau.

Table of values

n a(n)
0 1
1 0
2 1
3 0
4 5
5 1
6 0
7 33
8 10
9 1
10 0
11 253
12 93
13 15
14 1
15 0
16 2147
17 880
18 178
19 20
20 1
21 0
22 19593
23 8599
24 1982
25 288
26 25
27 1
28 0
29 188837
30 86762
31 21723
32 3684
33 423
34 30
35 1
36 0
37 1899107
38 900997
39 238419
40 44767
41 6111
42 583
43 35
44 1
45 0
46 19761209
47 9595264
48 2638114
49 531656
50 81606
51 9388
52 768
53 40
54 1
55 0
56 211447863
57 104447385
58 29503900
59 6255952
60 1044248
61 136740
62 13640
63 978
64 45
65 1

List of values

[1, 0, 1, 0, 5, 1, 0, 33, 10, 1, 0, 253, 93, 15, 1, 0, 2147, 880, 178, 20, 1, 0, 19593, 8599, 1982, 288, 25, 1, 0, 188837, 86762, 21723, 3684, 423, 30, 1, 0, 1899107, 900997, 238419, 44767, 6111, 583, 35, 1, 0, 19761209, 9595264, 2638114, 531656, 81606, 9388, 768, 40, 1, 0, 211447863, 104447385, 29503900, 6255952, 1044248, 136740, 13640, 978, 45, 1]