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A231253 Terms of A227891 of the form (p*q)^2, where p <= q are odious primes (A027697). 0

%I #10 Aug 20 2017 23:20:09

%S 582169,797449,1874161,1934881,2007889,2181529,3024121,3171961,

%T 4879681,5387041,6775609,9174841,11771761,16072081,18653761,19070689,

%U 20894041,22762441,25694761,26635921,29953729,31214569,33166081,40081561,42081169,45873529,48177481,49463089,50367409

%N Terms of A227891 of the form (p*q)^2, where p <= q are odious primes (A027697).

%C a(1) = 582169 is the smallest term > 1 of A227891 which does not have an evil prime divisor.

%C The sequence lists numbers of the form (p*q)^2 such that either q > p are both odious primes and among the numbers {p^2, p*q, q^2, p^2*q, q^2*p} there is exactly one odious, or q=p is an odious prime, while p^2 and p^3 are both evil.

%Y Cf. A000069, A001969, A027697, A227891.

%K nonn,base

%O 1,1

%A _Vladimir Shevelev_ and _Peter J. C. Moses_, Nov 06 2013

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Last modified September 15 15:47 EDT 2024. Contains 375938 sequences. (Running on oeis4.)