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A294041 as a simple table

n a(n)
0 1
1 1
2 4
3 54
4 768
5 18750
6 233280
7 16470860
8 587202560
9 27119434230
10 630000000000
11 71898540993972
12 686539734515712
13 279856598491241772
14 4767050928164388864
15 500950610595703125000
16 118704798114320964648960
17 10646582170477154154957990
18 478255590155229414229278720

[1,1,4,54,768,18750,233280,16470860,587202560,
 27119434230,630000000000,71898540993972,
 686539734515712,279856598491241772,
 4767050928164388864,500950610595703125000,
 118704798114320964648960,
 10646582170477154154957990,
 478255590155229414229278720]

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Last modified December 1 18:28 EST 2022. Contains 358475 sequences. (Running on oeis4.)