a(n) = (5*n+2)*(5*n+7).

Terms

a(0) =14a(1) =84a(2) =204a(3) =374a(4) =594a(5) =864a(6) =1184a(7) =1554a(8) =1974a(9) =2444a(10) =2964a(11) =3534a(12) =4154a(13) =4824a(14) =5544a(15) =6314a(16) =7134a(17) =8004a(18) =8924a(19) =9894a(20) =10914a(21) =11984a(22) =13104a(23) =14274a(24) =15494a(25) =16764a(26) =18084a(27) =19454a(28) =20874a(29) =22344