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A190662 as a simple table

n a(n)
1 15
2 21
3 85
4 265
5 2761
6 10129
7 111001
8 887161
9 21047881
10 210471241
11 1037836969
12 68018232241
13 361167207241
14 3312775065961
15 49691625984361
16 1548286451713369
17 16361621692416529
18 294509190463488529

[15,21,85,265,2761,10129,111001,887161,21047881,
 210471241,1037836969,68018232241,361167207241,
 3312775065961,49691625984361,1548286451713369,
 16361621692416529,294509190463488529]

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Last modified February 17 12:10 EST 2020. Contains 331996 sequences. (Running on oeis4.)