a(n) = n*(n + 9).

Terms

a(0) =0a(1) =10a(2) =22a(3) =36a(4) =52a(5) =70a(6) =90a(7) =112a(8) =136a(9) =162a(10) =190a(11) =220a(12) =252a(13) =286a(14) =322a(15) =360a(16) =400a(17) =442a(18) =486a(19) =532a(20) =580a(21) =630a(22) =682a(23) =736a(24) =792a(25) =850a(26) =910a(27) =972a(28) =1036a(29) =1102