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.

A269736 Triangle read by rows: T(n,r) (0 <= r <= n) = number of idempotents of rank r in the Motzkin monoid M_n.

Table of values

n a(n)
0 1
1 1
2 1
3 4
4 2
5 1
6 16
7 11
8 3
9 1
10 81
11 48
12 19
13 4
14 1
15 441
16 266
17 93
18 28
19 5
20 1
21 2601
22 1492
23 549
24 152
25 38
26 6
27 1
28 16129
29 9042
30 3211
31 947
32 226
33 49
34 7
35 1

List of values

[1, 1, 1, 4, 2, 1, 16, 11, 3, 1, 81, 48, 19, 4, 1, 441, 266, 93, 28, 5, 1, 2601, 1492, 549, 152, 38, 6, 1, 16129, 9042, 3211, 947, 226, 49, 7, 1]