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A147927 as a simple table

n a(n)
1 1
2 2
3 6
4 16
5 54
6 260
7 1236
8 6360
9 34730
10 192782
11 1393166
12 9882056
13 75731318
14 596396100
15 4939024062
16 49565770888 

[1,2,6,16,54,260,1236,6360,34730,192782,1393166,
 9882056,75731318,596396100,4939024062,49565770888]

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Last modified April 19 23:15 EDT 2024. Contains 371798 sequences. (Running on oeis4.)