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A128105 as a simple table

na(n)
13
28
321
456
5150
6408
71099
82984
98109
1022030
1159884
12162756
13442416
141202614
153269025
168886112
1724154960
1865659986
19178482314
20485165200
211318815750
223584912848
239744803461
2426489122152
2572004899350
26195729609452

[3,8,21,56,150,408,1099,2984,8109,22030,59884,
 162756,442416,1202614,3269025,8886112,24154960,
 65659986,178482314,485165200,1318815750,
 3584912848,9744803461,26489122152,72004899350,
 195729609452]