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A013720 as a simple table

n a(n)
0 15
1 3375
2 759375
3 170859375
4 38443359375
5 8649755859375
6 1946195068359375
7 437893890380859375
8 98526125335693359375
9 22168378200531005859375
10 4987885095119476318359375
11 1122274146401882171630859375 

[15,3375,759375,170859375,38443359375,
 8649755859375,1946195068359375,437893890380859375,
 98526125335693359375,22168378200531005859375,
 4987885095119476318359375,
 1122274146401882171630859375]

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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)