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A070923 a(n) is the smallest value >= 0 of the form x^3 - n^2. 7


%S 0,4,18,11,2,28,15,0,44,25,4,72,47,20,118,87,54,19,151,112,71,28,200,

%T 153,104,53,0,216,159,100,39,307,242,175,106,35,359,284,207,128,47,

%U 433,348,261,172,81,535,440,343,244,143,40,566,459,350,239,126,11,615,496

%N a(n) is the smallest value >= 0 of the form x^3 - n^2.

%C a(n) = 0 if n is a cube (i.e., n is in A000578(k)).

%C a(n) = A181138(n) if n is not a cube. - _Zak Seidov_, Mar 26 2013

%H Alois P. Heinz, <a href="/A070923/b070923.txt">Table of n, a(n) for n = 1..10000</a>

%F a(n) = ceiling(n^(2/3))^3 - n^2.

%Y Cf. A068527, A181138.

%K easy,look,nonn

%O 1,2

%A _Benoit Cloitre_, May 20 2002

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Last modified January 20 05:41 EST 2020. Contains 331067 sequences. (Running on oeis4.)