A161921 - OEIS

A161921 as a simple table

n	a(n)
0	0
1	0
2	0
3	1
4	2
5	3
6	7
7	11
8	17
9	28
10	43
11	63
12	96
13	139
14	199
15	287
16	406
17	566
18	792
19	1092
20	1496
21	2045
22	2772
23	3733
24	5016
25	6696
26	8897
27	11784
28	15534
29	20391
30	26692
31	34797
32	45207
33	58564
34	75614
35	97328
36	124953
37	159945
38	204185
39	260025
40	330286
41	418506
42	529106
43	667380
44	839938

[0,0,0,1,2,3,7,11,17,28,43,63,96,139,199,287,406, 566,792,1092,1496,2045,2772,3733,5016,6696,8897, 11784,15534,20391,26692,34797,45207,58564,75614, 97328,124953,159945,204185,260025,330286,418506, 529106,667380,839938]