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A151802 as a simple table

n a(n)
1 2
2 4
3 13
4 54
5 257
6 1384
7 8303
8 54674
9 390943
10 3009943
11 24782522
12 216985032
13 2010748246
14 19641718283
15 201551129440 

[2,4,13,54,257,1384,8303,54674,390943,3009943,
 24782522,216985032,2010748246,19641718283,
 201551129440]

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Last modified April 23 06:04 EDT 2024. Contains 371906 sequences. (Running on oeis4.)