A173721 - OEIS

A173721 as a simple table

n	a(n)
0	0
1	0
2	1
3	2
4	4
5	8
6	13
7	20
8	29
9	41
10	55
11	72
12	93
13	117
14	145
15	177
16	214
17	255
18	301
19	353
20	410
21	473
22	542
23	618
24	700
25	789
26	886
27	990
28	1102
29	1222
30	1351
31	1488
32	1634
33	1790
34	1955
35	2130
36	2315
37	2511
38	2717
39	2934
40	3163
41	3403
42	3655
43	3919
44	4196
45	4485
46	4787
47	5103
48	5432
49	5775
50	6132

[0,0,1,2,4,8,13,20,29,41,55,72,93,117,145,177,214, 255,301,353,410,473,542,618,700,789,886,990,1102, 1222,1351,1488,1634,1790,1955,2130,2315,2511,2717, 2934,3163,3403,3655,3919,4196,4485,4787,5103,5432, 5775,6132]