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A250317 as a simple table

n a(n)
1 18
2 200
3 436
4 3916
5 24126
6 197848
7 1559080
8 12424332
9 95711098
10 709795516
11 5002719434
12 33563203028

[18,200,436,3916,24126,197848,1559080,12424332,
 95711098,709795516,5002719434,33563203028]

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Last modified September 13 00:40 EDT 2024. Contains 375857 sequences. (Running on oeis4.)