A309690 - OEIS

A309690 as a simple table

n	a(n)
0	0
1	0
2	0
3	0
4	0
5	2
6	4
7	4
8	4
9	8
10	12
11	16
12	20
13	26
14	32
15	38
16	44
17	58
18	72
19	80
20	88
21	106
22	124
23	142
24	160
25	182
26	204
27	226
28	248
29	284
30	320
31	346
32	372
33	414
34	456
35	498
36	540
37	588
38	636
39	684
40	732
41	800
42	868
43	922
44	976
45	1052
46	1128
47	1204
48	1280
49	1364
50	1448
51	1532
52	1616
53	1726
54	1836
55	1928

[0,0,0,0,0,2,4,4,4,8,12,16,20,26,32,38,44,58,72, 80,88,106,124,142,160,182,204,226,248,284,320,346, 372,414,456,498,540,588,636,684,732,800,868,922, 976,1052,1128,1204,1280,1364,1448,1532,1616,1726, 1836,1928]