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A090627 as a simple table

na(n)
13
215
3291
4723
51455
63615
78835
8130827
9239595
10273435
11426891
12654135
132762427
142820927
158098527
1616766835
1743558023
1855566015

[3,15,291,723,1455,3615,8835,130827,239595,273435,
 426891,654135,2762427,2820927,8098527,16766835,
 43558023,55566015]