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A151341 as a simple table

n a(n)
0 1
1 1
2 4
3 20
4 126
5 882
6 6732
7 54483
8 461890
9 4059770
10 36749648
11 340841228
12 3226474132
13 31079221500
14 303907314960
15 3010947401340
16 30176604541890
17 305544118531410
18 3122029001183400
19 32162924697555960
20 333798776316127980
21 3487606641543204180
22 36662847052669011720
23 387575171486963664750

[1,1,4,20,126,882,6732,54483,461890,4059770,
 36749648,340841228,3226474132,31079221500,
 303907314960,3010947401340,30176604541890,
 305544118531410,3122029001183400,
 32162924697555960,333798776316127980,
 3487606641543204180,36662847052669011720,
 387575171486963664750]

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Last modified May 10 03:36 EDT 2024. Contains 372354 sequences. (Running on oeis4.)