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A057408 as a simple table

n a(n)
18 10
19 212
20 2530
21 22640
22 169906
23 1131904
24 6920388
25 39668532
26 216315230
27 1133876128
28 5757104542
29 28478125312
30 137854314576
31 655307492388
32 3067528095994
33 14171567365156
34 64732059542906
35 292778085749036 

[10,212,2530,22640,169906,1131904,6920388,
 39668532,216315230,1133876128,5757104542,
 28478125312,137854314576,655307492388,
 3067528095994,14171567365156,64732059542906,
 292778085749036]

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Last modified May 13 13:35 EDT 2024. Contains 372519 sequences. (Running on oeis4.)