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.

A223511 Triangle T(n,k) represents the coefficients of (x^9*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 9
3 1
4 153
5 27
6 1
7 3825
8 855
9 54
10 1
11 126225
12 32895
13 2745
14 90
15 1
16 5175225
17 1507815
18 150930
19 6705
20 135
21 1
22 253586025
23 80565975
24 9205245
25 499590
26 13860
27 189
28 1
29 14454403425
30 4926412575
31 623675430
32 39180645
33 1345050
34 25578
35 252
36 1

List of values

[1, 9, 1, 153, 27, 1, 3825, 855, 54, 1, 126225, 32895, 2745, 90, 1, 5175225, 1507815, 150930, 6705, 135, 1, 253586025, 80565975, 9205245, 499590, 13860, 189, 1, 14454403425, 4926412575, 623675430, 39180645, 1345050, 25578, 252, 1]