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A091875 as a simple table

na(n)
25
315
435
5115
6365
73215
832150
9321500
103215000
1132150000
12321500000
133215000000
1432150000000
15321500000000
163215000000000
1732150000000000
18321500000000000
193215000000000000
2032150000000000000
21321500000000000000

[5,15,35,115,365,3215,32150,321500,3215000,
 32150000,321500000,3215000000,32150000000,
 321500000000,3215000000000,32150000000000,
 321500000000000,3215000000000000,
 32150000000000000,321500000000000000]