A274099 - cp's OEIS frontend

A274099 Number of partitions of n*(n-1)/2 into at most four parts.

n	a(n)
1	1
2	1
3	3
4	9
5	23
6	54
7	120
8	249
9	478
10	864
11	1495
12	2484
13	3969
14	6136
15	9234
16	13561
17	19464
18	27378
19	37845
20	51488
21	69012
22	91260
23	119239
24	154078
25	197026
26	249535
27	313290
28	390144
29	482120
30	591519
31	720954
32	873264
33	1051513
34	1259130
35	1499950
36	1778097
37	2097984
38	2464489

[1, 1, 3, 9, 23, 54, 120, 249, 478, 864, 1495, 2484, 3969, 6136, 9234, 13561, 19464, 27378, 37845, 51488, 69012, 91260, 119239, 154078, 197026, 249535, 313290, 390144, 482120, 591519, 720954, 873264, 1051513, 1259130, 1499950, 1778097, 2097984, 2464489]

cp's OEIS Frontend

A274099 Number of partitions of n*(n-1)/2 into at most four parts.

Table of values

List of values