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A351901 as a simple table

n a(n)
0 0
1 0
2 1
3 1
4 10
5 46
6 246
7 1926
8 16080
9 143424
10 1397520
11 16163280
12 190902240
13 2534113440
14 35501044320
15 531674569440
16 8558324490240
17 147103748144640
18 2631981703680000
19 50393537347829760
20 1011054905709004800
21 21229069614652569600
22 468171587690550374400

[0,0,1,1,10,46,246,1926,16080,143424,1397520,
 16163280,190902240,2534113440,35501044320,
 531674569440,8558324490240,147103748144640,
 2631981703680000,50393537347829760,
 1011054905709004800,21229069614652569600,
 468171587690550374400]

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Last modified August 10 03:54 EDT 2024. Contains 375044 sequences. (Running on oeis4.)