A055365 - OEIS

A055365 as a simple table

n	a(n)
6	1
7	5
8	19
9	53
10	130
11	280
12	556
13	1024
14	1788
15	2971
16	4752
17	7338
18	11013
19	16099
20	23020
21	32249
22	44390
23	60109
24	80234
25	105670
26	137520
27	176979
28	225479
29	284562
30	356049
31	441890
32	544360
33	665883
34	809258
35	977455
36	1173871
37	1402098
38	1666212
39	1970508
40	2319825
41	2719248
42	3174469

[1,5,19,53,130,280,556,1024,1788,2971,4752,7338, 11013,16099,23020,32249,44390,60109,80234,105670, 137520,176979,225479,284562,356049,441890,544360, 665883,809258,977455,1173871,1402098,1666212, 1970508,2319825,2719248,3174469]