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A270935 as a simple table

n a(n)
0 1
1 8
2 44
3 220
4 956
5 3964
6 16124
7 65020
8 261116
9 1046524
10 4190204
11 16769020
12 67092476
13 268402684
14 1073676284
15 4294836220 

[1,8,44,220,956,3964,16124,65020,261116,1046524,
 4190204,16769020,67092476,268402684,1073676284,
 4294836220]

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Last modified April 23 03:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)