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%I #10 Jul 05 2022 11:41:32
%S 0,0,0,3,3,3,3,-4,1,1,1,1,1,1,1,8,8,8,8,8,8,8,8,8,17,17,-2,-2,-2,-2,
%T -2,-2,-2,-2,-2,9,9,9,9,9,9,9,9,9,9,9,9,9,22,22,22,22,22,22,22,22,22,
%U 22,22,22,22,22,22,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,36
%N Difference between largest square number and largest cube number less than n.
%F a(n) = floor(n^(1/2))^2 - floor(n^(1/3))^3.
%F a(n) = A000196(n)^2 - A048766(n)^3. - _Michel Marcus_, Aug 27 2013
%e n = 10; largest square = 3^2 = 9; largest cube = 2^3 = 8; a(10) = 9 - 8 = 1.
%o (PARI) a(n) = sqrtint(n)^2 - sqrtnint(n, 3)^3; \\ _Michel Marcus_, Aug 26 2013
%o (PARI) a(n) = sqrtnint(n, 2)^2 - sqrtnint(n, 3)^3; \\ _Michel Marcus_, Aug 26 2013
%K easy,sign
%O 1,4
%A _Felix Tubiana_, Jan 27 2004
%E a(64) corrected by _Michel Marcus_, Aug 26 2013
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