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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
 1, 6, 22, 58, 130, 268, 486, 796, 1198, 1682, 2268, 2980, 3876, 4896, 6164, 7686, 9378, 11496, 13486, 15784, 18560, 21370, 25108, 28636, 32168, 36570, 41260, 46610, 52184, 57260, 63264, 70452, 77930, 86224, 92708, 101016, 110058, 119948, 131060, 138456, 150596 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Seiichi Manyama, Table of n, a(n) for n = 0..1000 FORMULA a(n) = A320234(3*n). CROSSREFS Cf. A000122, A320234. Sequence in context: A363606 A366448 A127760 * A066188 A071239 A105450 Adjacent sequences: A320240 A320241 A320242 * A320244 A320245 A320246 KEYWORD nonn AUTHOR Seiichi Manyama, Oct 08 2018 STATUS approved

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Last modified May 23 08:52 EDT 2024. Contains 372760 sequences. (Running on oeis4.)