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A306137 as a simple table

n a(n)
1 0
2 7
3 90
4 4691
5 601535
6 173607551
7 138192505287
8 289978184070220
9 1508303074324756219

[0,7,90,4691,601535,173607551,138192505287,
 289978184070220,1508303074324756219]

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Last modified August 21 18:26 EDT 2019. Contains 326168 sequences. (Running on oeis4.)