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A320528 as a simple table

n a(n)
1 0
2 0
3 0
4 0
5 0
6 6
7 64
8 508
9 3428
10 21132
11 123050
12 688850
13 3752350
14 20032446
15 105372624
16 548066568
17 2826316248
18 14478890712
19 73794322750
20 374602205590
21 1895629599050
22 9568906539786
23 48208435317284
24 242500368793628
25 1218342441784468
26 6115097961883092
27 30669103347259650
28 153720181809997530
29 770100204404335350
30 3856500105221902326

[0,0,0,0,0,6,64,508,3428,21132,123050,688850,
 3752350,20032446,105372624,548066568,2826316248,
 14478890712,73794322750,374602205590,
 1895629599050,9568906539786,48208435317284,
 242500368793628,1218342441784468,6115097961883092,
 30669103347259650,153720181809997530,
 770100204404335350,3856500105221902326]

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Last modified April 16 03:28 EDT 2024. Contains 371696 sequences. (Running on oeis4.)