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A271096 as a simple table

n a(n)
0 1
1 5
2 20
3 88
4 332
5 1276
6 5204
7 19492
8 74536
9 288525
10 1140005
11 4512593
12 18022937
13 71970505
14 287448752
15 1149604849 

[1,5,20,88,332,1276,5204,19492,74536,288525,
 1140005,4512593,18022937,71970505,287448752,
 1149604849]

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)