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A090442 as a simple table

n a(n)
1 1
2 6
3 44
4 360
5 3152
6 28896
7 273856
8 2661504
9 26380544
10 265655808
11 2710244352
12 27952883712
13 290977271808
14 3053105307648
15 32256844087296
16 342870535471104
17 3664053076557824
18 39342496410894336
19 424243929700630528
20 4592400943255388160
21 49885822426526253056

[1,6,44,360,3152,28896,273856,2661504,26380544,
 265655808,2710244352,27952883712,290977271808,
 3053105307648,32256844087296,342870535471104,
 3664053076557824,39342496410894336,
 424243929700630528,4592400943255388160,
 49885822426526253056]

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Last modified August 18 19:27 EDT 2022. Contains 356215 sequences. (Running on oeis4.)