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n - nearest integer to (nearest integer to n^(2/3))^(3/2).
2

%I #3 Mar 30 2012 18:51:25

%S 0,0,-1,0,-1,0,1,-1,0,1,-1,0,1,-2,-1,0,1,-2,-1,0,1,-2,-1,0,1,-2,-1,0,

%T 1,2,-2,-1,0,1,2,-1,0,1,2,-3,-2,-1,0,1,2,-2,-1,0,1,2,-2,-1,0,1,2,3,-2,

%U -1,0,1,2,3,-2,-1,0,1,2,3,-2,-1,0,1,2,3,-2,-1,0,1,2,3,-3,-2,-1,0,1,2,3,-2

%N n - nearest integer to (nearest integer to n^(2/3))^(3/2).

%F a(n) = n-A002821(A054846(n)) = n-A054847(n)

%Y Cf. A002821, A054846, A054847.

%K easy,sign

%O 0,14

%A _Henry Bottomley_, Apr 14 2000