A225536 - OEIS

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A225536 as a simple table

n	a(n)
0	0
1	0
2	0
3	0
4	1
5	4
6	5
7	15
8	22
9	43
10	65
11	131
12	204
13	387
14	635
15	1136
16	2048
17	3727
18	6794
19	12296
20	22601
21	41746
22	76778
23	141923
24	263414
25	491925
26	917269
27	1718985
28	3225496
29	6067030
30	11435208
31	21593415
32	40858139

[0,0,0,0,1,4,5,15,22,43,65,131,204,387,635,1136, 2048,3727,6794,12296,22601,41746,76778,141923, 263414,491925,917269,1718985,3225496,6067030, 11435208,21593415,40858139]