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A257289 as a simple table

n a(n)
0 1
1 16
2 200
3 2248
4 23816
5 243016
6 2416520
7 23583688
8 226933256
9 2159839816
10 20378082440
11 190918934728
12 1778399954696
13 16486635929416
14 152228014061960
15 1400838452135368
16 12853836673840136
17 117654854901535816
18 1074656292809619080
19 9798007424852945608

[1,16,200,2248,23816,243016,2416520,23583688,
 226933256,2159839816,20378082440,190918934728,
 1778399954696,16486635929416,152228014061960,
 1400838452135368,12853836673840136,
 117654854901535816,1074656292809619080,
 9798007424852945608]

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Last modified July 17 16:38 EDT 2019. Contains 325107 sequences. (Running on oeis4.)