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A340316 as a simple table

na(n)
12
23
36
45
510
630
77
814
942
10210
1111
1215
1366
14330
152310
1613
1721
1870
19390
202730
2130030
2217
2322
2478
25462
263570
2739270
28510510
2919
3026
31102
32510
333990
3443890
35570570
369699690
3723
3833
39105
40546
414290
4246410
43690690
4411741730
45223092870

[2,3,6,5,10,30,7,14,42,210,11,15,66,330,2310,13,
 21,70,390,2730,30030,17,22,78,462,3570,39270,
 510510,19,26,102,510,3990,43890,570570,9699690,23,
 33,105,546,4290,46410,690690,11741730,223092870]