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A214770 as a simple table

n a(n)
1 1
2 2
3 12
4 120
5 1680
6 30232
7 664832
8 17277120
9 518031360
10 17602865312
11 668505311232
12 28059791760000
13 1289932186583040
14 64455076284318592
15 3478305412257677312
16 201608948937441269760
17 12491465252403224248320
18 823886511479340063068672
19 57633367371058675735068672

[1,2,12,120,1680,30232,664832,17277120,518031360,
 17602865312,668505311232,28059791760000,
 1289932186583040,64455076284318592,
 3478305412257677312,201608948937441269760,
 12491465252403224248320,823886511479340063068672,
 57633367371058675735068672]

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Last modified February 22 22:43 EST 2024. Contains 370265 sequences. (Running on oeis4.)