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A051621 as a simple table

n a(n)
0 1
1 13
2 221
3 4641
4 116025
5 3364725
6 111035925
7 4108329225
8 168441498225
9 7579867420125
10 371413503586125
11 19684915690064625
12 1122040194333683625
13 68444451854354701125
14 4448889370533055573125
15 306973366566780834545625

[1,13,221,4641,116025,3364725,111035925,
 4108329225,168441498225,7579867420125,
 371413503586125,19684915690064625,
 1122040194333683625,68444451854354701125,
 4448889370533055573125,306973366566780834545625]

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Last modified September 18 18:23 EDT 2019. Contains 327178 sequences. (Running on oeis4.)