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A228515 as a simple table

na(n)
11
22
34
46
58
612
720
852
9308
108500
112105652
1217181974836
1336028814200938804
14618970019678718951650500916
1522300745198530623760505737951367313156481332

[1,2,4,6,8,12,20,52,308,8500,2105652,17181974836,
 36028814200938804,618970019678718951650500916,
 22300745198530623760505737951367313156481332]