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%I #24 Feb 22 2021 03:02:26
%S 2,6,30,42,110,182,210,462,506,870,930,1122,1190,1406,1482,1722,1806,
%T 2162,3306,3422,3782,4290,4422,4830,4970,5402,6006,6162,6806,7310,
%U 7482,8742,8930,10302,10506,11130,11342,11990,12210,12882,13110,14042,15006,16770,17030
%N Squarefree oblong numbers.
%C Oblong numbers that are squarefree numbers.
%H Amiram Eldar, <a href="/A229882/b229882.txt">Table of n, a(n) for n = 1..10000</a>
%F Intersection of A002378 and A005117. - _Joerg Arndt_, Oct 03 2013
%F a(n) = A007674(n)^2 + A007674(n). - _Charles R Greathouse IV_, Oct 04 2013
%t Select[#*(# + 1) & /@ Range[150], SquareFreeQ] (* _Amiram Eldar_, Feb 22 2021 *)
%o (PARI) for(n=1,1e4,if(issquarefree(n) && issquarefree(n+1), print1(n*(n+1)", "))) \\ _Charles R Greathouse IV_, Mar 18 2014
%Y Cf. A002378, A005117, A007674, A061304.
%K nonn,easy
%O 1,1
%A _Irina Gerasimova_, Oct 02 2013
%E Wrong term removed and more terms added by _Amiram Eldar_, Feb 22 2021
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