A156763 - OEIS

A156763 as a simple table

n	a(n)
0	2
1	3
2	3
3	7
4	12
5	7
6	21
7	42
8	42
9	21
10	71
11	160
12	180
13	160
14	71
15	253
16	660
17	770
18	770
19	660
20	253
21	925
22	2814
23	3570
24	3360
25	3570
26	2814
27	925
28	3433
29	12068
30	17388
31	15750
32	15750
33	17388
34	12068
35	3433
36	12871
37	51552
38	85344
39	81312
40	69300
41	81312
42	85344
43	51552
44	12871

[2,3,3,7,12,7,21,42,42,21,71,160,180,160,71,253, 660,770,770,660,253,925,2814,3570,3360,3570,2814, 925,3433,12068,17388,15750,15750,17388,12068,3433, 12871,51552,85344,81312,69300,81312,85344,51552, 12871]