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A341921 as a simple table

n a(n)
1 1
2 9
3 50
4 254
5 1287
6 6630
7 34846
8 186714
9 1018095
10 5638035
11 31651992
12 179850344
13 1032901028
14 5988670002
15 35017696806
16 206326044386
17 1224068679855
18 7307391855855
19 43871253636210
20 264755875041630
21 1605357997312335
22 9776732655285960
23 59781214452500424
24 366905787075963864

[1,9,50,254,1287,6630,34846,186714,1018095,
 5638035,31651992,179850344,1032901028,5988670002,
 35017696806,206326044386,1224068679855,
 7307391855855,43871253636210,264755875041630,
 1605357997312335,9776732655285960,
 59781214452500424,366905787075963864]

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Last modified May 18 18:42 EDT 2022. Contains 353824 sequences. (Running on oeis4.)