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A284611 as a simple table

n a(n)
1 1
2 0
3 0
4 1
5 2
6 0
7 0
8 4
9 6
10 0
11 0
12 12
13 15
14 0
15 0
16 30
17 40
18 0
19 0
20 70
21 84
22 0
23 0
24 165
25 198
26 0
27 0
28 330
29 405
30 0
31 0
32 704
33 836
34 0
35 0
36 1380
37 1620
38 0
39 0
40 2688
41 3192
42 0
43 0
44 4984
45 5824
46 0
47 0
48 9394
49 10934
50 0
51 0
52 16665
53 19392
54 0
55 0
56 29970
57 34560
58 0
59 0
60 52096

[1,0,0,1,2,0,0,4,6,0,0,12,15,0,0,30,40,0,0,70,84,
 0,0,165,198,0,0,330,405,0,0,704,836,0,0,1380,1620,
 0,0,2688,3192,0,0,4984,5824,0,0,9394,10934,0,0,
 16665,19392,0,0,29970,34560,0,0,52096]

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)