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A222690 as a simple table

n a(n)
1 1
2 0
3 0
4 0
5 3
6 0
7 3
8 4
9 8
10 0
11 4
12 18
13 32
14 50
15 0
16 8
17 56
18 220
19 420
20 216
21 0
22 10
23 237
24 664
25 3189
26 2050
27 1120
28 0
29 50
30 784
31 7248
32 29770
33 47696
34 32296
35 5440
36 0
37 66
38 3218
39 25642
40 288829
41 419562
42 723244
43 159672
44 27576
45 0
46 216
47 11152
48 298371
49 3056797
50 12765040
51 20259516

[1,0,0,0,3,0,3,4,8,0,4,18,32,50,0,8,56,220,420,
 216,0,10,237,664,3189,2050,1120,0,50,784,7248,
 29770,47696,32296,5440,0,66,3218,25642,288829,
 419562,723244,159672,27576,0,216,11152,298371,
 3056797,12765040,20259516]

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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)