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A019019 as a simple table

n a(n)
2 2
3 4
4 26
5 134
6 958
7 6034
8 37650
9 242504
10 1590952
11 10574462
12 71449792
13 489478402
14 3388172486
15 23660827272
16 166485808342 

[2,4,26,134,958,6034,37650,242504,1590952,
 10574462,71449792,489478402,3388172486,
 23660827272,166485808342]

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Last modified September 19 15:37 EDT 2024. Contains 376013 sequences. (Running on oeis4.)