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A210323 as a simple table

n a(n)
1 0
2 3
3 16
4 57
5 192
6 599
7 1872
8 5727
9 17488
10 53115
11 161040
12 487073
13 1471680
14 4441167
15 13392272
16 40355877
17 121543680
18 365895947
19 1101089808
20 3312442185
21 9962240928
22 29954639751
23 90049997136
24 270661616363
25 813397065024
26 2444101696683
27 7343167947040
28 22059763982001
29 66263812628160

[0,3,16,57,192,599,1872,5727,17488,53115,161040,
 487073,1471680,4441167,13392272,40355877,
 121543680,365895947,1101089808,3312442185,
 9962240928,29954639751,90049997136,270661616363,
 813397065024,2444101696683,7343167947040,
 22059763982001,66263812628160]

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Last modified June 16 10:03 EDT 2019. Contains 324152 sequences. (Running on oeis4.)