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A153956 as a simple table

n a(n)
0 1
1 2
2 2
3 4
4 14
5 16
6 62
7 400
8 1312
9 8228
10 101575
11 539692
12 5945952
13 128078527
14 1209629759
15 22708191479
16 862913200941

[1,2,2,4,14,16,62,400,1312,8228,101575,539692,
 5945952,128078527,1209629759,22708191479,
 862913200941]

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Last modified June 20 02:43 EDT 2024. Contains 373512 sequences. (Running on oeis4.)