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.

A223517 Triangle T(n,k) represents the coefficients of (x^15*d/dx)^n, where n=1,2,3,...; generalization of Stirling numbers of second kind A008277, Lah-numbers A008297.

Table of values

n a(n)
1 1
2 15
3 1
4 435
5 45
6 1
7 18705
8 2415
9 90
10 1
11 1066185
12 158775
13 7725
14 150
15 1
16 75699135
17 12497985
18 722700
19 18825
20 225
21 1
22 6434426475
23 1150525845
24 75372885
25 2379300
26 38850
27 315
28 1
29 637008221025
30 121487010975
31 8763187230
32 318061485
33 6380850
34 71610
35 420
36 1

List of values

[1, 15, 1, 435, 45, 1, 18705, 2415, 90, 1, 1066185, 158775, 7725, 150, 1, 75699135, 12497985, 722700, 18825, 225, 1, 6434426475, 1150525845, 75372885, 2379300, 38850, 315, 1, 637008221025, 121487010975, 8763187230, 318061485, 6380850, 71610, 420, 1]