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Positive integers with primes p replaced by 2p and also 3p replaced by 2p, then sorted into increasing order.
3

%I #15 Apr 06 2015 06:09:58

%S 1,4,4,4,6,6,8,10,10,10,12,14,14,14,16,18,20,22,22,22,24,25,26,26,26,

%T 27,28,30,32,34,34,34,35,36,38,38,38,40,42,44,45,46,46,46,48,49,50,52,

%U 54,55,56,58,58,58,60,62,62,62,63,64,65,66

%N Positive integers with primes p replaced by 2p and also 3p replaced by 2p, then sorted into increasing order.

%C Odd primes p and three times odd primes are missing; twice primes (except 6) each appear three times.

%C The smoothed version of A064413 (A256417) is a rearrangement of these terms.

%H N. J. A. Sloane, <a href="/A256416/b256416.txt">Table of n, a(n) for n = 1..10000</a>

%Y Cf. A064413, A256415 (the unsorted sequence), A256417.

%K nonn

%O 1,2

%A _N. J. A. Sloane_, Apr 05 2015