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Let (x, y) be the lexicographically earliest pair of nonnegative integers such that (x^2) OR (y^2) = A331531(n); a(n) = y.
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%I #9 Jan 20 2020 12:54:53

%S 0,1,2,2,3,3,4,4,4,5,5,6,6,6,7,6,7,7,6,8,8,8,8,8,9,9,9,10,10,10,8,10,

%T 9,11,11,12,12,12,12,13,13,12,12,13,14,14,14,12,12,14,14,14,15,14,15,

%U 15,13,15,12,14,15,14,16,16,16,16,16,16,17,16,17,17

%N Let (x, y) be the lexicographically earliest pair of nonnegative integers such that (x^2) OR (y^2) = A331531(n); a(n) = y.

%H Rémy Sigrist, <a href="/A331535/b331535.txt">Table of n, a(n) for n = 1..10000</a>

%F a(n) > A331534(n) for any n > 1.

%Y Cf. A331531, A331534 (corresponding x).

%K nonn,base

%O 1,3

%A _Rémy Sigrist_, Jan 19 2020