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A355501 as a simple table

n a(n)
0 1
1 3
2 15
3 90
4 633
5 5028
6 44217
7 424434
8 4399953
9 48858984
10 577372809
11 7221983838
12 95192539641
13 1317190650636
14 19071213218745
15 288112248054882
16 4530217559806497
17 73976635012027344
18 1252091246140278153
19 21926952634345281030
20 396671314081806278601

[1,3,15,90,633,5028,44217,424434,4399953,48858984,
 577372809,7221983838,95192539641,1317190650636,
 19071213218745,288112248054882,4530217559806497,
 73976635012027344,1252091246140278153,
 21926952634345281030,396671314081806278601]

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Last modified September 6 17:59 EDT 2024. Contains 375718 sequences. (Running on oeis4.)