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A228907 as a simple table

n a(n)
0 1
1 2
2 6
3 24
4 114
5 598
6 3336
7 19402
8 116302
9 713368
10 4455650
11 28240942
12 181180912
13 1174280146
14 7677229718
15 50570040088
16 335289825874
17 2235856077798
18 14985808827416
19 100900119437082
20 682145490613118
21 4628755102582328
22 31514118237222850
23 215214456560655070

[1,2,6,24,114,598,3336,19402,116302,713368,
 4455650,28240942,181180912,1174280146,7677229718,
 50570040088,335289825874,2235856077798,
 14985808827416,100900119437082,682145490613118,
 4628755102582328,31514118237222850,
 215214456560655070]

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Last modified May 9 15:13 EDT 2024. Contains 372352 sequences. (Running on oeis4.)