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A002728 as a simple table

na(n)
01
14
222
3190
43250
5136758
617256831
77216495370
810271202313659
949856692830176512
10826297617412284162618
1146948445432190686211183650
129200267975562856184153936960940
136261904454889790650636380541051266410
1414910331834338546882501064075429145637985605

[1,4,22,190,3250,136758,17256831,7216495370,
 10271202313659,49856692830176512,
 826297617412284162618,46948445432190686211183650,
 9200267975562856184153936960940,
 6261904454889790650636380541051266410,
 14910331834338546882501064075429145637985605]