A055999 - OEIS

A055999 as a simple table

n	a(n)
0	0
1	4
2	9
3	15
4	22
5	30
6	39
7	49
8	60
9	72
10	85
11	99
12	114
13	130
14	147
15	165
16	184
17	204
18	225
19	247
20	270
21	294
22	319
23	345
24	372
25	400
26	429
27	459
28	490
29	522
30	555
31	589
32	624
33	660
34	697
35	735
36	774
37	814
38	855
39	897
40	940
41	984
42	1029
43	1075
44	1122
45	1170
46	1219
47	1269
48	1320
49	1372
50	1425
51	1479

[0,4,9,15,22,30,39,49,60,72,85,99,114,130,147,165, 184,204,225,247,270,294,319,345,372,400,429,459, 490,522,555,589,624,660,697,735,774,814,855,897, 940,984,1029,1075,1122,1170,1219,1269,1320,1372, 1425,1479]