A254233 - cp's OEIS frontend

A254233 Number of ways to partition the multiset consisting of n copies each of 1, 2, and 3 into n sets of size 3.

n	a(n)
0	1
1	1
2	4
3	10
4	25
5	49
6	103
7	184
8	331
9	554
10	911
11	1424
12	2204
13	3278
14	4817
15	6896
16	9746
17	13487
18	18480
19	24882
20	33192
21	43683
22	56994
23	73512
24	94131
25	119340
26	150300
27	187732
28	233065
29	287248
30	352153
31	428944
32	519949
33	626737
34	752095
35	897994
36	1067924
37	1264241
38	1491155
39	1751672

[1, 1, 4, 10, 25, 49, 103, 184, 331, 554, 911, 1424, 2204, 3278, 4817, 6896, 9746, 13487, 18480, 24882, 33192, 43683, 56994, 73512, 94131, 119340, 150300, 187732, 233065, 287248, 352153, 428944, 519949, 626737, 752095, 897994, 1067924, 1264241, 1491155, 1751672]

cp's OEIS Frontend

A254233 Number of ways to partition the multiset consisting of n copies each of 1, 2, and 3 into n sets of size 3.

Table of values

List of values