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a(n) = A000404(n)^6.
5

%I #7 Nov 09 2016 02:44:06

%S 64,15625,262144,1000000,4826809,24137569,34012224,64000000,244140625,

%T 308915776,594823321,1073741824,1544804416,2565726409,4096000000,

%U 4750104241,8303765625,15625000000,19770609664,22164361129,38068692544

%N a(n) = A000404(n)^6.

%H G. C. Greubel, <a href="/A135788/b135788.txt">Table of n, a(n) for n = 1..1400</a>

%t nMax = 100; p := Floor[Sqrt[nMax - 1]]; Union[Flatten[Table[a^2 + b^2, {a, p}, {b, a, Floor[Sqrt[nMax - a^2]]}]]]^6 (* _G. C. Greubel_, Nov 09 2016 *)

%Y Cf. A000404, A050803, A135784, A060803, A135786, A135787.

%K nonn

%O 1,1

%A _Artur Jasinski_, Nov 29 2007