A017825 - OEIS

A017825 as a simple table

n	a(n)
0	1
1	0
2	0
3	1
4	1
5	1
6	2
7	3
8	4
9	6
10	9
11	13
12	19
13	27
14	40
15	59
16	85
17	124
18	182
19	265
20	386
21	564
22	823
23	1200
24	1751
25	2555
26	3728
27	5439
28	7935
29	11578
30	16893
31	24646
32	35959
33	52466
34	76548
35	111684
36	162950
37	237747
38	346876
39	506098
40	738406

[1,0,0,1,1,1,2,3,4,6,9,13,19,27,40,59,85,124,182, 265,386,564,823,1200,1751,2555,3728,5439,7935, 11578,16893,24646,35959,52466,76548,111684,162950, 237747,346876,506098,738406]