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.

A223515 Triangle T(n,k) represents the coefficients of (x^13*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 13
3 1
4 325
5 39
6 1
7 12025
8 1807
9 78
10 1
11 589225
12 102375
13 5785
14 130
15 1
16 35942725
17 6936475
18 466830
19 14105
20 195
21 1
22 2623818925
23 549241875
24 41948725
25 1538810
26 29120
27 273
28 1
29 223024608625
30 49858620175
31 4198780950
32 177364005
33 4130490
34 53690
35 364
36 1
37 21633387036625

List of values

[1, 13, 1, 325, 39, 1, 12025, 1807, 78, 1, 589225, 102375, 5785, 130, 1, 35942725, 6936475, 466830, 14105, 195, 1, 2623818925, 549241875, 41948725, 1538810, 29120, 273, 1, 223024608625, 49858620175, 4198780950, 177364005, 4130490, 53690, 364, 1, 21633387036625]