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Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A097685 as a simple table

na(n)
12
25
36
48
517
650
7684
8720
91452
101679
113146
1272821
13111902
14146063
15180689
16330906

[2,5,6,8,17,50,684,720,1452,1679,3146,72821,
 111902,146063,180689,330906]