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A108808 as a simple table

na(n)
14
274
31434
427780
5538150
610424872
7201947094
83912050356
975782907270
101468040672696
1128438383992230
12550898690444420
1310671821831261942
14206730898391393192
154004720564629102582
1677578083032366404308
171502816206487087179878
1829112043791259796460440

[4,74,1434,27780,538150,10424872,201947094,
 3912050356,75782907270,1468040672696,
 28438383992230,550898690444420,10671821831261942,
 206730898391393192,4004720564629102582,
 77578083032366404308,1502816206487087179878,
 29112043791259796460440]