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.

A223521 Triangle T(n,k) represents the coefficients of (x^19*d/dx)^n, where n=1,2,3,...

Table of values

n a(n)
1 1
2 19
3 1
4 703
5 57
6 1
7 38665
8 3895
9 114
10 1
11 2822545
12 326895
13 12445
14 190
15 1
16 256851595
17 32896885
18 1484280
19 30305
20 285
21 1
22 27996823855
23 3875508945
24 197651965
25 4878440
26 62510
27 399
28 1
29 3555596629585
30 524061968815
31 29372612430
32 831849165
33 13067250
34 115178
35 532
36 1

List of values

[1, 19, 1, 703, 57, 1, 38665, 3895, 114, 1, 2822545, 326895, 12445, 190, 1, 256851595, 32896885, 1484280, 30305, 285, 1, 27996823855, 3875508945, 197651965, 4878440, 62510, 399, 1, 3555596629585, 524061968815, 29372612430, 831849165, 13067250, 115178, 532, 1]