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A300309 as a simple table

na(n)
14
213
320
445
5148
6529
71747
85797
919584
1066222
11223320
12753486
132543959
148589093
1528995289
1697886648
17330471005
181115681398
193766562359
2012716019134
2142929679141
22144931880115
23489294288989
241651872133532
255576769838008

[4,13,20,45,148,529,1747,5797,19584,66222,223320,
 753486,2543959,8589093,28995289,97886648,
 330471005,1115681398,3766562359,12716019134,
 42929679141,144931880115,489294288989,
 1651872133532,5576769838008]