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A217888 as a simple table

n a(n)
1 1
2 3
3 11
4 45
5 197
6 902
7 4274
8 20790
9 103354
10 523786
11 2703206
12 14210824
13 76217372 

[1,3,11,45,197,902,4274,20790,103354,523786,
 2703206,14210824,76217372]

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Last modified April 23 07:33 EDT 2024. Contains 371905 sequences. (Running on oeis4.)