Number of integer solutions (a_1, a_2, ... , a_8) to the equation a_1^2 + 2*a_2^2 + ... + 8*a_8^2 = 3*n.

A320243

Number of integer solutions (a_1, a_2, ... , a_8) to the equation a_1^2 + 2*a_2^2 + ... + 8*a_8^2 = 3*n.

Terms

    a(0) =1a(1) =6a(2) =22a(3) =58a(4) =130a(5) =268a(6) =486a(7) =796a(8) =1198a(9) =1682a(10) =2268a(11) =2980a(12) =3876a(13) =4896a(14) =6164a(15) =7686a(16) =9378a(17) =11496a(18) =13486a(19) =15784a(20) =18560a(21) =21370a(22) =25108a(23) =28636a(24) =32168a(25) =36570a(26) =41260a(27) =46610a(28) =52184a(29) =57260

External references