A268434 - cp's OEIS frontend

A268434 Triangle read by rows, Lah numbers of order 2, T(n,n) = 1, T(n,k) = 0 if k<0 or k>n, otherwise T(n,k) = T(n-1,k-1)+((n-1)^2+k^2)*T(n-1,k), for n>=0 and 0<=k<=n.

n	a(n)
0	1
1	0
2	1
3	0
4	2
5	1
6	0
7	10
8	10
9	1
10	0
11	100
12	140
13	28
14	1
15	0
16	1700
17	2900
18	840
19	60
20	1
21	0
22	44200
23	85800
24	31460
25	3300
26	110
27	1
28	0
29	1635400
30	3476200
31	1501500
32	203060
33	10010
34	182
35	1
36	0
37	81770000
38	185874000
39	90563200
40	14700400
41	943800
42	25480
43	280
44	1

[1, 0, 1, 0, 2, 1, 0, 10, 10, 1, 0, 100, 140, 28, 1, 0, 1700, 2900, 840, 60, 1, 0, 44200, 85800, 31460, 3300, 110, 1, 0, 1635400, 3476200, 1501500, 203060, 10010, 182, 1, 0, 81770000, 185874000, 90563200, 14700400, 943800, 25480, 280, 1]

cp's OEIS Frontend

A268434 Triangle read by rows, Lah numbers of order 2, T(n,n) = 1, T(n,k) = 0 if k<0 or k>n, otherwise T(n,k) = T(n-1,k-1)+((n-1)^2+k^2)*T(n-1,k), for n>=0 and 0<=k<=n.

Table of values

List of values