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%I #11 Jan 25 2020 11:36:34
%S 0,1,2,3,16,5,36,7,64,81,100,11,144,13,196,225,256,17,324,19,400,441,
%T 484,23,576,625,676,729,784,29,900,31,1024,1089,1156,1225,1296,37,
%U 1444,1521,1600,41,1764,43,1936,2025,2116,47,2304,2401,2500,2601,2704,53
%N Natural numbers but with nonprimes squared.
%H Daniel Starodubtsev, <a href="/A103390/b103390.txt">Table of n, a(n) for n = 1..10000</a>
%H Peter Alfeld, <a href="http://www.math.utah.edu/~alfeld/math/primelist.html">The 1,000 smallest prime numbers </a>.
%e 4 is not a prime, so it is squared.
%t Table[ If[ PrimeQ[n], n, n^2], {n, 0, 54}] (* _Robert G. Wilson v_, Mar 24 2005 *)
%Y Cf. A103164.
%K easy,nonn
%O 1,3
%A _Parthasarathy Nambi_, Mar 20 2005
%E More terms from _Robert G. Wilson v_, Mar 24 2005
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