A087150 - OEIS

A087150 as a simple table

n	a(n)
1	1
2	2
3	6
4	20
5	40
6	42
7	54
8	90
9	168
10	236
11	406
12	712
13	1094
14	1602
15	2240
16	2970
17	3690
18	4874
19	5008
20	5710
21	8338
22	9714
23	10496
24	11314
25	12812
26	19924
27	27678
28	37748
29	49142
30	55996
31	71438
32	92420
33	104866
34	110158
35	128642
36	143030
37	151098
38	158264
39	208234
40	213902

[1,2,6,20,40,42,54,90,168,236,406,712,1094,1602, 2240,2970,3690,4874,5008,5710,8338,9714,10496, 11314,12812,19924,27678,37748,49142,55996,71438, 92420,104866,110158,128642,143030,151098,158264, 208234,213902]