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A041875 as a simple table

na(n)
01
12
25
37
433
5700
62833
73533
89899
923331
10989801
112002933
124995667
136998600
1432990067
15699790007
162832150095
173531940102
189896030299
1923324000700
20989504059699
212002332120098
224994168299895
236996500419993
2432980169979867
25699580069997200

[1,2,5,7,33,700,2833,3533,9899,23331,989801,
 2002933,4995667,6998600,32990067,699790007,
 2832150095,3531940102,9896030299,23324000700,
 989504059699,2002332120098,4994168299895,
 6996500419993,32980169979867,699580069997200]