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%I #12 Mar 15 2014 05:15:43
%S 4,8,16,20,40,44,56,64,72,80,92,96,108,116,120,124,132,136,140,144,
%T 148,152,156,164,176,184,188,196,200,204,208,224,232,240,252,256,264,
%U 268,272
%N Numbers m such that the numbers of primes, even positive integers and odd positive integers less than or equal to m are all even.
%C A subsequence of A008586.
%H Ivan N. Ianakiev, <a href="/A237990/b237990.txt">Table of n, a(n) for n = 1..10000</a>
%F a(n) == 0 (mod 4)
%e A tetrahedral die whose faces are marked with the numbers from 1 to 4 has an even number of sides marked with prime numbers, even integers and odd integers. Therefore, 4 is in the sequence.
%Y Cf. A008586, A237989.
%K nonn,easy
%O 1,1
%A _Ivan N. Ianakiev_, Feb 16 2014
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