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A145556 as a simple table

na(n)
12
23
360
484
5126
62772
772072
8360360
91225224
1023279256
1111639628
12503217
1313385572200
142007835830
15465817912560
162888071057872
17627841534320
182489716429200
19534293145706320
2018423901576080
214381203794791824
22941958815880242160
23261655226633400600

[2,3,60,84,126,2772,72072,360360,1225224,23279256,
 11639628,503217,13385572200,2007835830,
 465817912560,2888071057872,627841534320,
 2489716429200,534293145706320,18423901576080,
 4381203794791824,941958815880242160,
 261655226633400600]