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A059865 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 5
6 35
7 385
8 5005
9 85085
10 1956955
11 48923875
12 1516640125
13 53082404375
14 1964048961875
15 80526007436875
16 3784722349533125
17 200590284525255625
18 11032465648889059375
19 672980404582232621875
20 43743726297845120421875

[1,1,1,1,5,35,385,5005,85085,1956955,48923875,
 1516640125,53082404375,1964048961875,
 80526007436875,3784722349533125,
 200590284525255625,11032465648889059375,
 672980404582232621875,43743726297845120421875]

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Last modified October 19 03:54 EDT 2019. Contains 328211 sequences. (Running on oeis4.)