a(n) = Sum_{k=0..7} (n + k)^2.

Terms

a(0) =140a(1) =204a(2) =284a(3) =380a(4) =492a(5) =620a(6) =764a(7) =924a(8) =1100a(9) =1292a(10) =1500a(11) =1724a(12) =1964a(13) =2220a(14) =2492a(15) =2780a(16) =3084a(17) =3404a(18) =3740a(19) =4092a(20) =4460a(21) =4844a(22) =5244a(23) =5660a(24) =6092a(25) =6540a(26) =7004a(27) =7484a(28) =7980a(29) =8492