A006156 - OEIS

A006156 as a simple table

n	a(n)
0	1
1	3
2	6
3	12
4	18
5	30
6	42
7	60
8	78
9	108
10	144
11	204
12	264
13	342
14	456
15	618
16	798
17	1044
18	1392
19	1830
20	2388
21	3180
22	4146
23	5418
24	7032
25	9198
26	11892
27	15486
28	20220
29	26424
30	34422
31	44862
32	58446
33	76122
34	99276
35	129516
36	168546
37	219516
38	285750
39	372204
40	484446
41	630666
42	821154

[1,3,6,12,18,30,42,60,78,108,144,204,264,342,456, 618,798,1044,1392,1830,2388,3180,4146,5418,7032, 9198,11892,15486,20220,26424,34422,44862,58446, 76122,99276,129516,168546,219516,285750,372204, 484446,630666,821154]