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A274645 as a simple table

n a(n)
1 1
2 20
3 1301
4 177260
5 41385102
6 14760468600
7 7465847167005
8 5083351577582300
9 4483012419041095680
10 4971032496120058085376
11 6769339545226095791964160
12 11105730970797793499164966912
13 21604722570792867452576610648064

[1,20,1301,177260,41385102,14760468600,
 7465847167005,5083351577582300,
 4483012419041095680,4971032496120058085376,
 6769339545226095791964160,
 11105730970797793499164966912,
 21604722570792867452576610648064]

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Last modified April 23 15:20 EDT 2024. Contains 371916 sequences. (Running on oeis4.)