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A228305 as a simple table

na(n)
13
24
35
48
510
616
720
832
940
1064
1180
12128
13160
14256
15320
16512
17640
181024
191280
202048
212560
224096
235120
248192
2510240
2616384
2720480
2832768
2940960
3065536
3181920
32131072
33163840
34262144
35327680
36524288
37655360
381048576
391310720
402097152
412621440
424194304
435242880

[3,4,5,8,10,16,20,32,40,64,80,128,160,256,320,512,
 640,1024,1280,2048,2560,4096,5120,8192,10240,
 16384,20480,32768,40960,65536,81920,131072,163840,
 262144,327680,524288,655360,1048576,1310720,
 2097152,2621440,4194304,5242880]