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A124639 as a simple table

n a(n)
0 1
1 0
2 3
3 4
4 12
5 20
6 52
7 84
8 198
9 352
10 730
11 1332
12 2648
13 4808
14 9232
15 16780
16 31227
17 56312
18 102641
19 182808

[1,0,3,4,12,20,52,84,198,352,730,1332,2648,4808,
 9232,16780,31227,56312,102641,182808]

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Last modified January 19 16:49 EST 2022. Contains 350466 sequences. (Running on oeis4.)