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A157550 as a simple table

n a(n)
2 1
3 3
4 54
5 1830
6 68175
7 2604105
8 72741487
9 1575681348
10 32584952460
11 663445574880
12 13119864945495
13 250743317040879
14 4601891725568592
15 80821202263252920
16 1358608769903073690
17 21985893765384549032
18 344851090651019364715

[1,3,54,1830,68175,2604105,72741487,1575681348,
 32584952460,663445574880,13119864945495,
 250743317040879,4601891725568592,
 80821202263252920,1358608769903073690,
 21985893765384549032,344851090651019364715]

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Last modified August 31 22:14 EDT 2024. Contains 375574 sequences. (Running on oeis4.)