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A343724 as a simple table

n a(n)
1 0
2 64
3 400
4 4624
5 26244
6 228484
7 2022084
8 20268004
9 202208400
10 2006860804
11 20220840000
12 200084446864
13 2002004266084
14 20000286620224
15 200080402620484
16 2000028662022400
17 20000086482842244
18 200002866202240000
19 2000008648284224400
20 20000246442286866064

[0,64,400,4624,26244,228484,2022084,20268004,
 202208400,2006860804,20220840000,200084446864,
 2002004266084,20000286620224,200080402620484,
 2000028662022400,20000086482842244,
 200002866202240000,2000008648284224400,
 20000246442286866064]

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Last modified August 21 22:52 EDT 2024. Contains 375353 sequences. (Running on oeis4.)