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A248765 as a simple table

na(n)
11
21
31
41
51
62
72
82
96
1012
1112
1212
1312
1412
1512
1624
1724
18144
19144
20720
21720
22720
23720
241440
251440
261440
274320
2860480
2960480
3060480
3160480
32120960
33120960
34241920
351209600
363628800
373628800
383628800
393628800
407257600

[1,1,1,1,1,2,2,2,6,12,12,12,12,12,12,24,24,144,
 144,720,720,720,720,1440,1440,1440,4320,60480,
 60480,60480,60480,120960,120960,241920,1209600,
 3628800,3628800,3628800,3628800,7257600]