a(n) = A175369(n^2).

Terms

a(0) =1a(1) =9a(2) =81a(3) =137a(4) =321a(5) =609a(6) =1081a(7) =1561a(8) =2137a(9) =3193a(10) =4393a(11) =4889a(12) =6617a(13) =8425a(14) =9529a(15) =11905a(16) =14169a(17) =17097a(18) =18953a(19) =21953a(20) =25105a(21) =29177a(22) =32681a(23) =35937a(24) =41105a(25) =46321a(26) =50529a(27) =55217a(28) =62177a(29) =67665