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A223370 as a simple table

na(n)
121
290
390
4420
5990
6420
71992
811610
911610
101992
119552
12139158
13357354
14139158
159552
1645984
171686042
1811206806
1911206806
201686042
2145984
22221760
2320537766
24356391222
25933306108
26356391222
2720537766
28221760
291070208
30250834914

[21,90,90,420,990,420,1992,11610,11610,1992,9552,
 139158,357354,139158,9552,45984,1686042,11206806,
 11206806,1686042,45984,221760,20537766,356391222,
 933306108,356391222,20537766,221760,1070208,
 250834914]