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A147168 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 1
6 1
7 3
8 13
9 37
10 67
11 147
12 499
13 1519
14 5231
15 22885
16 101333
17 548323
18 3012179
19 18194005
20 121163279
21 875290875 

[1,1,1,1,1,1,3,13,37,67,147,499,1519,5231,22885,
 101333,548323,3012179,18194005,121163279,
 875290875]

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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)