A290760 - OEIS

A290760 as a simple table

n	a(n)
1	1
2	2
3	6
4	30
5	78
6	330
7	390
8	870
9	1410
10	3198
11	3390
12	4290
13	7878
14	9570
15	10230
16	11310
17	13026
18	15510
19	15990
20	18330
21	26070
22	30966
23	37290
24	39390
25	40890
26	44070
27	45210
28	65130
29	84810
30	94830
31	98310
32	104610
33	122070
34	124410
35	132990
36	154830
37	159330
38	175890
39	198330
40	201630

[1,2,6,30,78,330,390,870,1410,3198,3390,4290,7878, 9570,10230,11310,13026,15510,15990,18330,26070, 30966,37290,39390,40890,44070,45210,65130,84810, 94830,98310,104610,122070,124410,132990,154830, 159330,175890,198330,201630]