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A151331 as a simple table

n a(n)
0 1
1 3
2 18
3 105
4 684
5 4550
6 31340
7 219555
8 1564080
9 11271876
10 82059768
11 602215614
12 4450146624
13 33076800900
14 247096919784
15 1854031805769
16 13965171795432
17 105550935041552
18 800212396412000
19 6083310009164388
20 46360755048406656
21 354109165968099048
22 2710276234371255888
23 20782807250217463750

[1,3,18,105,684,4550,31340,219555,1564080,
 11271876,82059768,602215614,4450146624,
 33076800900,247096919784,1854031805769,
 13965171795432,105550935041552,800212396412000,
 6083310009164388,46360755048406656,
 354109165968099048,2710276234371255888,
 20782807250217463750]

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Last modified September 14 10:49 EDT 2024. Contains 375921 sequences. (Running on oeis4.)