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A003321 as a simple table

na(n)
12
20
3153
41634
54150
6548834
71741725
824678050
9146511208
104679307774
1132164049650
120
13564240140138
1428116440335967
150
164338281769391370
17233411150132317
180
191517841543307505039
2063105425988599693916

[2,0,153,1634,4150,548834,1741725,24678050,
 146511208,4679307774,32164049650,0,564240140138,
 28116440335967,0,4338281769391370,233411150132317,
 0,1517841543307505039,63105425988599693916]