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A207423 as a simple table

n a(n)
1 15
2 225
3 1425
4 8463
5 55361
6 341329
7 2048823
8 12436631
9 75326185
10 453869325
11 2736999545
12 16513415365
13 99553034715
14 600117044821
15 3618247957621
16 21813452529627
17 131499832021425
18 792759625024175
19 4779237788051311

[15,225,1425,8463,55361,341329,2048823,12436631,
 75326185,453869325,2736999545,16513415365,
 99553034715,600117044821,3618247957621,
 21813452529627,131499832021425,792759625024175,
 4779237788051311]

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Last modified June 14 05:51 EDT 2021. Contains 345018 sequences. (Running on oeis4.)