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A216814 as a simple table

na(n)
22
34
410
512
684
7264
8990
92860
109724
1118564
12117572
1345220
1419380
151782960
166463230
1725092540
1858549260
1995527740

[2,4,10,12,84,264,990,2860,9724,18564,117572,
 45220,19380,1782960,6463230,25092540,58549260,
 95527740]