A024667 - OEIS

A024667 as a simple table

n	a(n)
1	1
2	3
3	6
4	11
5	18
6	25
7	33
8	44
9	57
10	68
11	81
12	99
13	116
14	134
15	152
16	177
17	200
18	223
19	246
20	276
21	304
22	331
23	360
24	397
25	433
26	465
27	501
28	541
29	579
30	617
31	662
32	707
33	749
34	793
35	845
36	895
37	944
38	995
39	1051
40	1105
41	1161
42	1214
43	1279
44	1337
45	1397
46	1456
47	1528
48	1591
49	1657
50	1722
51	1799
52	1870

[1,3,6,11,18,25,33,44,57,68,81,99,116,134,152,177, 200,223,246,276,304,331,360,397,433,465,501,541, 579,617,662,707,749,793,845,895,944,995,1051,1105, 1161,1214,1279,1337,1397,1456,1528,1591,1657,1722, 1799,1870]