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A001623 as a simple table

n a(n)
3 1
4 4
5 46
6 1064
7 35792
8 1673792
9 103443808
10 8154999232
11 798030483328
12 94866122760704
13 13460459852344064
14 2246551018310998016
15 435626600453967929344
16 97108406689489312301056
17 24658059294992101453262848
18 7075100096781964808223653888
19 2277710095706779480096994066432
20 817555425148510266964075644059648

[1,4,46,1064,35792,1673792,103443808,8154999232,
 798030483328,94866122760704,13460459852344064,
 2246551018310998016,435626600453967929344,
 97108406689489312301056,
 24658059294992101453262848,
 7075100096781964808223653888,
 2277710095706779480096994066432,
 817555425148510266964075644059648]

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Last modified June 10 05:51 EDT 2024. Contains 373253 sequences. (Running on oeis4.)