A223522 - cp's OEIS frontend

A223522 Triangle T(n,k) represents the coefficients of (x^20*d/dx)^n, where n=1,2,3,...; generalization of Stirling numbers of second kind A008277, Lah-numbers A008297.

n	a(n)
1	1
2	20
3	1
4	780
5	60
6	1
7	45240
8	4320
9	120
10	1
11	3483480
12	382200
13	13800
14	200
15	1
16	334414080
17	40556880
18	1734600
19	33600
20	300
21	1
22	38457619200
23	5039012160
24	243505080
25	5699400
26	69300
27	420
28	1

[1, 20, 1, 780, 60, 1, 45240, 4320, 120, 1, 3483480, 382200, 13800, 200, 1, 334414080, 40556880, 1734600, 33600, 300, 1, 38457619200, 5039012160, 243505080, 5699400, 69300, 420, 1]

cp's OEIS Frontend

A223522 Triangle T(n,k) represents the coefficients of (x^20*d/dx)^n, where n=1,2,3,...; generalization of Stirling numbers of second kind A008277, Lah-numbers A008297.

Table of values

List of values