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A268332 Squarefree numbers differing by more than 3 from any other squarefree number. 8

%I #13 Mar 20 2016 13:04:28

%S 2526,44405,47527,47973,55779,72474,101037,106327,106674,109023,

%T 110107,133577,153173,165574,183553,186247,193026,196747,208847,

%U 209674,212127,218527,220209,234622,237522,245149,261478,266853,269953,308649,328877,334522,342066,364151,370785,375823

%N Squarefree numbers differing by more than 3 from any other squarefree number.

%H Christopher E. Thompson, <a href="/A268332/b268332.txt">Table of n, a(n) for n = 1..1000</a>

%p SF:= select(numtheory:-issqrfree, [$1..10^6]):

%p SF[select(i -> SF[i]-SF[i-1]>=4 and SF[i+1]-SF[i]>=4, [$2..nops(SF)-1])]; # _Robert Israel_, Feb 02 2016

%Y Cf. A005117, A073247, A268331, A268333, A268334.

%K nonn

%O 1,1

%A _Christopher E. Thompson_, Feb 01 2016

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Last modified March 28 08:22 EDT 2024. Contains 371236 sequences. (Running on oeis4.)