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A006790 as a simple table

na(n)
01
12
25
315
453
5211
6938
74582
824349
9139671
10858745
115628789
1239145021
13287667582
142226033629
1518082308403
16153770703339
171365631349757
1812638233544989
19121640399661294
201215438543434225
2112587691428792115

[1,2,5,15,53,211,938,4582,24349,139671,858745,
 5628789,39145021,287667582,2226033629,18082308403,
 153770703339,1365631349757,12638233544989,
 121640399661294,1215438543434225,
 12587691428792115]