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A225107 as a simple table

na(n)
13
224
3228
42256
522512
6225024
72250048
822500096
9225000192
102250000384
1122500000768
12225000001536
132250000003072
1422500000006144
15225000000012288
162250000000024576
1722500000000049152
18225000000000098304
192250000000000196608
2022500000000000393216

[3,24,228,2256,22512,225024,2250048,22500096,
 225000192,2250000384,22500000768,225000001536,
 2250000003072,22500000006144,225000000012288,
 2250000000024576,22500000000049152,
 225000000000098304,2250000000000196608,
 22500000000000393216]