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A217940 as a simple table

na(n)
11
21
31
44
54
64
736
833
942
1033
11576
12480
13648
14720
15456
1614400
1710960
1814900
1918780
2017900
219460
22518400
23362880
24487200
25648240
26730800
27606480
28274800
2925401600
3016465680
3121656040
3229481585
3336149820
3436569190
3526845140
3610643745
371625702400
38981872640
391260878080
401729096320
412218287120
422495765440
432285697120
441503969600
45530052880

[1,1,1,4,4,4,36,33,42,33,576,480,648,720,456,
 14400,10960,14900,18780,17900,9460,518400,362880,
 487200,648240,730800,606480,274800,25401600,
 16465680,21656040,29481585,36149820,36569190,
 26845140,10643745,1625702400,981872640,1260878080,
 1729096320,2218287120,2495765440,2285697120,
 1503969600,530052880]