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A306386 as a simple table

n a(n)
0 1
1 0
2 0
3 1
4 7
5 68
6 837
7 11863
8 189503
9 3377341
10 66564396
11 1439304777
12 33902511983
13 864514417843
14 23735220814661
15 698226455579492
16 21914096529153695
17 731009183350476805
18 25829581529376423945
19 963786767538027630275
20 37871891147795243899204
21 1563295398737378236910447

[1,0,0,1,7,68,837,11863,189503,3377341,66564396,
 1439304777,33902511983,864514417843,
 23735220814661,698226455579492,21914096529153695,
 731009183350476805,25829581529376423945,
 963786767538027630275,37871891147795243899204,
 1563295398737378236910447]

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Last modified April 25 12:33 EDT 2024. Contains 371969 sequences. (Running on oeis4.)