A241639 - OEIS

A241639 as a simple table

n	a(n)
0	1
1	0
2	1
3	1
4	3
5	4
6	6
7	9
8	12
9	17
10	21
11	31
12	37
13	54
14	66
15	91
16	113
17	155
18	193
19	254
20	317
21	411
22	517
23	649
24	814
25	1009
26	1268
27	1548
28	1925
29	2335
30	2907
31	3484
32	4309
33	5156
34	6343
35	7535
36	9231
37	10949
38	13340
39	15782
40	19091
41	22555
42	27179
43	32025
44	38377
45	45171
46	53852
47	63267
48	75076

[1,0,1,1,3,4,6,9,12,17,21,31,37,54,66,91,113,155, 193,254,317,411,517,649,814,1009,1268,1548,1925, 2335,2907,3484,4309,5156,6343,7535,9231,10949, 13340,15782,19091,22555,27179,32025,38377,45171, 53852,63267,75076]