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A030140 The nonsquares squared. 1


%S 4,9,25,36,49,64,100,121,144,169,196,225,289,324,361,400,441,484,529,

%T 576,676,729,784,841,900,961,1024,1089,1156,1225,1369,1444,1521,1600,

%U 1681,1764,1849,1936,2025,2116,2209,2304,2500,2601,2704,2809,2916,3025

%N The nonsquares squared.

%F a(n) = A000037(n)^2.

%e a(1)=2^2, a(2)=3^2, a(3)=5^2, a(4)=6^2, a(5)=7^2, ..., a(n)=(integer which is not a perfect square)^2.

%p a:=proc(n) if type(sqrt(n),integer)=false then n^2 else fi end: seq(a(n),n=1..70); # _Emeric Deutsch_, Apr 11 2007

%Y Cf. A000037.

%K nonn

%O 1,1

%A _N. J. A. Sloane_

%E Edited by _N. J. A. Sloane_, Jul 02 2008 at the suggestion of _R. J. Mathar_

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Last modified January 16 23:44 EST 2019. Contains 319206 sequences. (Running on oeis4.)