A248845 - cp's OEIS frontend

A248845 Triangle read by rows: T(m,n) = number of ways of distributing n distinguishable balls into m distinguishable bins of size 3 where empty bins are permitted (m >= 1, 1 <= n <= 3m).

n	a(n)
1	1
2	1
3	1
4	2
5	4
6	8
7	14
8	20
9	20
10	3
11	9
12	27
13	78
14	210
15	510
16	1050
17	1680
18	1680
19	4
20	16
21	64
22	252
23	960
24	3480
25	11760
26	36120
27	97440
28	218400
29	369600
30	369600
31	5
32	25
33	125
34	620
35	3020
36	14300
37	65100
38	281400
39	1138200
40	4229400
41	14091000
42	40656000
43	96096000
44	168168000
45	168168000
46	6
47	36
48	216
49	1290
50	7620
51	44220
52	250320
53	1371720
54	7215600
55	36086400

[1, 1, 1, 2, 4, 8, 14, 20, 20, 3, 9, 27, 78, 210, 510, 1050, 1680, 1680, 4, 16, 64, 252, 960, 3480, 11760, 36120, 97440, 218400, 369600, 369600, 5, 25, 125, 620, 3020, 14300, 65100, 281400, 1138200, 4229400, 14091000, 40656000, 96096000, 168168000, 168168000, 6, 36, 216, 1290, 7620, 44220, 250320, 1371720, 7215600, 36086400]

cp's OEIS Frontend

A248845 Triangle read by rows: T(m,n) = number of ways of distributing n distinguishable balls into m distinguishable bins of size 3 where empty bins are permitted (m >= 1, 1 <= n <= 3m).

Table of values

List of values