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A026685 as a simple table

na(n)
11
25
317
487
5324
61707
76595
835300
9139114
10751901
113000177
1216322561
1365684626
14359049028
151453825024
167975236698
1732444454286
18178473218093
19728737293093
204017589328269
2116453338330248
2290873261482607
23373067000217563

[1,5,17,87,324,1707,6595,35300,139114,751901,
 3000177,16322561,65684626,359049028,1453825024,
 7975236698,32444454286,178473218093,728737293093,
 4017589328269,16453338330248,90873261482607,
 373067000217563]