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 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. 2

%I #8 Oct 08 2018 09:00:53

%S 1,6,22,58,130,268,486,796,1198,1682,2268,2980,3876,4896,6164,7686,

%T 9378,11496,13486,15784,18560,21370,25108,28636,32168,36570,41260,

%U 46610,52184,57260,63264,70452,77930,86224,92708,101016,110058,119948,131060,138456,150596

%N 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.

%H Seiichi Manyama, <a href="/A320243/b320243.txt">Table of n, a(n) for n = 0..1000</a>

%F a(n) = A320234(3*n).

%Y Cf. A000122, A320234.

%K nonn

%O 0,2

%A _Seiichi Manyama_, Oct 08 2018

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Last modified June 22 21:50 EDT 2024. Contains 373610 sequences. (Running on oeis4.)