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A056147 as a simple table

n a(n)
1 1
2 1
3 4
4 18
5 48
6 360
7 450
8 6174
9 27000
10 34200
11 93250
12 1776566
13 11293824
14 172014648
15 1296688778
16 20393895570
17 173895132784
18 3328106382492
19 11622794050422
20 287786755919610
21 709366149217940
22 17019652496034468
23 198351459813601270

[1,1,4,18,48,360,450,6174,27000,34200,93250,
 1776566,11293824,172014648,1296688778,20393895570,
 173895132784,3328106382492,11622794050422,
 287786755919610,709366149217940,17019652496034468,
 198351459813601270]

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Last modified April 25 13:02 EDT 2024. Contains 371969 sequences. (Running on oeis4.)