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A118421 Number of integer solutions to n = x^2 + (2y)^2 + z(z+1)/2. 3

%I #5 Aug 15 2015 14:57:38

%S 6,4,2,12,16,10,12,16,12,14,20,4,8,24,14,20,16,16,28,32,18,12,40,4,20,

%T 44,8,22,20,28,20,32,16,8,44,18,32,24,16,44,56,24,24,32,22,48,24,24,

%U 20,36,24,36,60,12,46,36,16,32,20,24,44,40,16,32,56,26,36,72,24,32,56,24

%N Number of integer solutions to n = x^2 + (2y)^2 + z(z+1)/2.

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/Square-TriangleTheorem.html">Square-Triangle Theorem</a>

%Y Cf. A118422, A118423, A118426.

%K nonn

%O 1,1

%A _Eric W. Weisstein_, Apr 27 2006

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Last modified August 11 05:51 EDT 2024. Contains 375059 sequences. (Running on oeis4.)