A255202 - OEIS

%I #15 Feb 22 2015 11:41:34

%S 369,8788,16456,20522,23335,53601,64203,77047,97930,100123,116986,

%T 120745,127847,128474,129629,137028,138427,139723,152996,206376,

%U 209983,217177,230179,236419,240219,243899

%N Numbers n such that prime(n) + {1, 2, 3, 4, 5, 6} are all products of the same number of primes (not necessarily all distinct).

%C Differs from A255194: E.g., 64203 is here (and not in A255194) because prime(64203)+{1,2,3,4,5,6} are all products of four (not three) primes.

%H Zak Seidov, <a href="/A255202/b255202.txt">Table of n, a(n) for n = 1..1200</a>

%o (PARI) for(n=1,3*10^4,p=prime(n);c=0;for(i=1,5,if(bigomega(p+i)==bigomega(p+i+1),c++);if(bigomega(p+i)!=bigomega(p+i+1),c=0;break));if(c==5,print1(n,", "))) \\ _Derek Orr_, Feb 19 2015

%Y Cf. A255194.

%K nonn

%O 1,1

%A _Zak Seidov_, Feb 17 2015