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A060861 Least number of the form x^2 + y^3 (x, y nonnegative) in exactly n ways.

%I A060861 #14 Feb 27 2017 02:51:34
%S A060861 3,0,1,225,1025,92025,1334025,5472225,35964225,930860225,1000837225,
%T A060861 4979585600,38515961025,88154795025,2046945411225,88813460025,
%U A060861 5684061441600,13052612865600,64745012358225
%N A060861 Least number of the form x^2 + y^3 (x, y nonnegative) in exactly n ways.
%C A060861 A045634(a(n)) = n and A045634(m) <> n for m < a(n). [_Reinhard Zumkeller_, Jul 17 2010]
%C A060861 a(n) > 2*10^14 for n >= 19. [_Donovan Johnson_, Dec 13 2008]
%C A060861 a(19) <= 4143680790926400 = 64*a(18). [_Jon E. Schoenfield_, Aug 11 2010]
%e A060861 a(3)=225: A045634(225) = #{15^2+0^3, 10^2+5^3, 3^2+6^3} = 3;
%e A060861 a(4)=1025: A045634(1025) = #{32^2+1^3, 31^2+4^3, 30^2+5^3, 5^2+10^3} = 4;
%e A060861 a(5)=92025: A045634(92025) = #{303^2+6^3, 255^2+30^3, 213^2+36^3, 152^2+41^3, 30^2+45^3} = 5.
%K A060861 nonn
%O A060861 0,1
%A A060861 _David W. Wilson_, May 04 2001
%E A060861 a(14) and a(16)-a(18) from _Donovan Johnson_, Dec 13 2008
%E A060861 a(0) and examples from _Reinhard Zumkeller_, Jul 17 2010