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A074553 as a simple table

n a(n)
0 3
1 16
2 98
3 664
4 4802
5 36136
6 278498
7 2177464
8 17174402
9 136190536
10 1083566498
11 8638939864
12 68964148802
13 550978111336
14 4404154809698
15 35214904015864
16 281627607648002
17 2252562882278536
18 18018213594168098
19 144134262724445464

[3,16,98,664,4802,36136,278498,2177464,17174402,
 136190536,1083566498,8638939864,68964148802,
 550978111336,4404154809698,35214904015864,
 281627607648002,2252562882278536,
 18018213594168098,144134262724445464]

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Last modified February 27 10:15 EST 2020. Contains 332304 sequences. (Running on oeis4.)