a(n) = 361*n^2 + 2*n.

Terms

a(0) =363a(1) =1448a(2) =3255a(3) =5784a(4) =9035a(5) =13008a(6) =17703a(7) =23120a(8) =29259a(9) =36120a(10) =43703a(11) =52008a(12) =61035a(13) =70784a(14) =81255a(15) =92448a(16) =104363a(17) =117000a(18) =130359a(19) =144440a(20) =159243a(21) =174768a(22) =191015a(23) =207984a(24) =225675a(25) =244088a(26) =263223a(27) =283080a(28) =303659a(29) =324960