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A064854 as a simple table

n a(n)
1 1
2 0
3 7
4 0
5 21
6 37
7 118
8 56
9 19
10 428
11 808
12 3920
13 2256
14 15240
15 28312
16 46733
17 128931
18 251439
19 434788
20 645833
21 1397733
22 1179155
23 7185704
24 1551886
25 33308648
26 65879944
27 121274199
28 65829274
29 228529703
30 248939750
31 799831532
32 2835988891

[1,0,7,0,21,37,118,56,19,428,808,3920,2256,15240,
 28312,46733,128931,251439,434788,645833,1397733,
 1179155,7185704,1551886,33308648,65879944,
 121274199,65829274,228529703,248939750,799831532,
 2835988891]

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Last modified July 11 19:26 EDT 2024. Contains 374234 sequences. (Running on oeis4.)