A008020 - OEIS

A008020 as a simple table

n	a(n)
0	1
1	4
2	9
3	18
4	30
5	43
6	64
7	90
8	111
9	140
10	181
11	215
12	249
13	296
14	342
15	389
16	450
17	511
18	565
19	624
20	690
21	766
22	850
23	927
24	1003
25	1088
26	1172
27	1262
28	1368
29	1471
30	1566
31	1669
32	1779
33	1892
34	2011
35	2132
36	2256
37	2384
38	2510
39	2642
40	2784
41	2925
42	3067
43	3214
44	3364
45	3521
46	3680
47	3838
48	4007

[1,4,9,18,30,43,64,90,111,140,181,215,249,296,342, 389,450,511,565,624,690,766,850,927,1003,1088, 1172,1262,1368,1471,1566,1669,1779,1892,2011,2132, 2256,2384,2510,2642,2784,2925,3067,3214,3364,3521, 3680,3838,4007]