a(n) = 529*n^2 + 2*n.

Terms

a(0) =531a(1) =2120a(2) =4767a(3) =8472a(4) =13235a(5) =19056a(6) =25935a(7) =33872a(8) =42867a(9) =52920a(10) =64031a(11) =76200a(12) =89427a(13) =103712a(14) =119055a(15) =135456a(16) =152915a(17) =171432a(18) =191007a(19) =211640a(20) =233331a(21) =256080a(22) =279887a(23) =304752a(24) =330675a(25) =357656a(26) =385695a(27) =414792a(28) =444947a(29) =476160