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A078207 as a simple table

n a(n)
1 1
2 6
3 384
4 2856
5 22727
6 188679
7 1612903
8 14084506
9 124999999
10 112359549631
11 1111234572418
12 1019369022515831
13 9409019496692991
14 873646201597158837
15 815363874644766139852
16 76437144029054504848414
17 719381682508917578872474
18 679393593475575516018040602

[1,6,384,2856,22727,188679,1612903,14084506,
 124999999,112359549631,1111234572418,
 1019369022515831,9409019496692991,
 873646201597158837,815363874644766139852,
 76437144029054504848414,719381682508917578872474,
 679393593475575516018040602]

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Last modified May 25 21:46 EDT 2020. Contains 334597 sequences. (Running on oeis4.)