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A005432 as a simple table

na(n)
01
11
22
36
430
5156
61455
711300
8151221
91694723
1029594446
11404126228
1210594925360
13175238308453
145651774693595
15117053117995400
165320744503742316
17125889331236297288
187598016157515302757

[1,1,2,6,30,156,1455,11300,151221,1694723,
 29594446,404126228,10594925360,175238308453,
 5651774693595,117053117995400,5320744503742316,
 125889331236297288,7598016157515302757]