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A027332 as a simple table

n a(n)
3 20
4 176
5 1512
6 12870
7 109164
8 924748
9 7834168
10 66418402
11 563744942
12 4791449750
13 40783720460
14 347663922060
15 2968147161398
16 25377794552506
17 217294268925008
18 1863151839105740
19 15996740130657296
20 137522838096075630
21 1183736303278008264
22 10201145791863572028

[20,176,1512,12870,109164,924748,7834168,66418402,
 563744942,4791449750,40783720460,347663922060,
 2968147161398,25377794552506,217294268925008,
 1863151839105740,15996740130657296,
 137522838096075630,1183736303278008264,
 10201145791863572028]

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Last modified January 25 16:01 EST 2022. Contains 350572 sequences. (Running on oeis4.)