A320327 - OEIS

A320327 as a simple table

n	a(n)
0	1
1	1
2	2
3	1
4	3
5	12
6	18
7	12
8	3
9	10
10	60
11	150
12	200
13	150
14	60
15	10
16	35
17	280
18	980
19	1960
20	2450
21	1960
22	980
23	280
24	35
25	126
26	1260
27	5670
28	15120
29	26460
30	31752
31	26460
32	15120
33	5670
34	1260
35	126
36	462
37	5544
38	30492
39	101640
40	228690
41	365904
42	426888
43	365904
44	228690
45	101640
46	30492
47	5544
48	462

[1,1,2,1,3,12,18,12,3,10,60,150,200,150,60,10,35, 280,980,1960,2450,1960,980,280,35,126,1260,5670, 15120,26460,31752,26460,15120,5670,1260,126,462, 5544,30492,101640,228690,365904,426888,365904, 228690,101640,30492,5544,462]