a(n) = (11*n + 4)^2.

Terms

a(0) =16a(1) =225a(2) =676a(3) =1369a(4) =2304a(5) =3481a(6) =4900a(7) =6561a(8) =8464a(9) =10609a(10) =12996a(11) =15625a(12) =18496a(13) =21609a(14) =24964a(15) =28561a(16) =32400a(17) =36481a(18) =40804a(19) =45369a(20) =50176a(21) =55225a(22) =60516a(23) =66049a(24) =71824a(25) =77841a(26) =84100a(27) =90601a(28) =97344a(29) =104329