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A145359 as a simple table

na(n)
11
26
378
4588
56804
662496
7753984
88273664
9109118016
101408700160
1120697223680
12309818234880
135100265336320
1487215844925440
151605019401216000
1630898776106598400
17631358784683827200
1813503510009903513600
19303781522335363072000
207137966147222822912000

[1,6,78,588,6804,62496,753984,8273664,109118016,
 1408700160,20697223680,309818234880,5100265336320,
 87215844925440,1605019401216000,30898776106598400,
 631358784683827200,13503510009903513600,
 303781522335363072000,7137966147222822912000]