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A064538 as a simple table

na(n)
01
12
26
34
430
512
642
724
890
920
1066
1124
122730
13420
1490
1548
16510
17180
183990
19840
206930
21660
22690
23720
2413650
251092
26378
2756
28870
2960
3014322
317392
32117810
337140
34210
3572
361919190
37103740
388190
391680
4094710
4113860
4299330
439240
44217350
459660
469870
4710080
48324870

[1,2,6,4,30,12,42,24,90,20,66,24,2730,420,90,48,
 510,180,3990,840,6930,660,690,720,13650,1092,378,
 56,870,60,14322,7392,117810,7140,210,72,1919190,
 103740,8190,1680,94710,13860,99330,9240,217350,
 9660,9870,10080,324870]