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A129324 as a simple table

n a(n)
0 0
1 0
2 1
3 6
4 36
5 220
6 1410
7 9534
8 68040
9 511704
10 4046310
11 33560010
12 291244668
13 2638581972
14 24901833866
15 244333004790
16 2487900487440
17 26245651191600
18 286408960814862
19 3228529392965250
20 37544229610105220
21 449858650676764140

[0,0,1,6,36,220,1410,9534,68040,511704,4046310,
 33560010,291244668,2638581972,24901833866,
 244333004790,2487900487440,26245651191600,
 286408960814862,3228529392965250,
 37544229610105220,449858650676764140]

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Last modified April 19 23:40 EDT 2024. Contains 371798 sequences. (Running on oeis4.)