# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a321495 Showing 1-1 of 1 %I A321495 #6 Nov 13 2018 12:47:30 %S A321495 728364,1565564,1774409,1817529,1923635,2162094,2187185,2199834, %T A321495 2225894,2369850,2557190,2594514,2659734,2671305,2794154,2944689, %U A321495 2964884,3126045,3139730,3170244,3244955,3273809,3279639,3382379,3387054,3506810,3555110,3585945,3686969,3711630 %N A321495 Numbers k such that k and k+1 have at least 5 but not both exactly 5 distinct prime factors. %C A321495 Complement of A140079 (k and k+1 have exactly 5 distinct prime factors) in A321505 (k and k+1 have at least 5 distinct prime factors). %F A321495 A321505 \ A140079. %t A321495 aQ[n_]:=Module[{v={PrimeNu[n],PrimeNu[n+1]}},Min[v]>4 && v!={5,5}]; Select[Range[120000], aQ] (* _Amiram Eldar_, Nov 12 2018 *) %o A321495 (PARI) is(n)=vecmin(n=[omega(n), omega(n+1)])>4&&n!=[5,5] %Y A321495 Cf. A140079, A321505; A321494, A321496 (analog for 4 & 6 factors). %K A321495 nonn %O A321495 1,1 %A A321495 _M. F. Hasler_, Nov 12 2018 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE