a(n) = 576*n^2 - 2*n.

Terms

a(0) =574a(1) =2300a(2) =5178a(3) =9208a(4) =14390a(5) =20724a(6) =28210a(7) =36848a(8) =46638a(9) =57580a(10) =69674a(11) =82920a(12) =97318a(13) =112868a(14) =129570a(15) =147424a(16) =166430a(17) =186588a(18) =207898a(19) =230360a(20) =253974a(21) =278740a(22) =304658a(23) =331728a(24) =359950a(25) =389324a(26) =419850a(27) =451528a(28) =484358a(29) =518340