a(n) = (11*n+1)^2.

Terms

a(0) =1a(1) =144a(2) =529a(3) =1156a(4) =2025a(5) =3136a(6) =4489a(7) =6084a(8) =7921a(9) =10000a(10) =12321a(11) =14884a(12) =17689a(13) =20736a(14) =24025a(15) =27556a(16) =31329a(17) =35344a(18) =39601a(19) =44100a(20) =48841a(21) =53824a(22) =59049a(23) =64516a(24) =70225a(25) =76176a(26) =82369a(27) =88804a(28) =95481a(29) =102400