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A000608 as a simple table

na(n)
01
11
21
33
410
544
6238
71650
814512
9163341
102360719
1143944974
121055019099
1332664984238
141303143553205
1566900392672168
164413439778321689

[1,1,1,3,10,44,238,1650,14512,163341,2360719,
 43944974,1055019099,32664984238,1303143553205,
 66900392672168,4413439778321689]