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%I #11 Sep 22 2024 17:57:46
%S 8,10,24,26,28,44,46,48,50,62,64,74,76,80,82,98,100,116,118,120,122,
%T 124,126,134,136,146,148,152,154,168,170,172,174,176,188,190,206,208,
%U 224,226,242,244,246,260,262,274,276,278,280,288,290,296,298,314,316,324
%N Even numbers k such that k^2-1 is divisible by a square > 1.
%t Select[Range[2,400,2],!SquareFreeQ[#^2-1]&] (* _Harvey P. Dale_, Jan 15 2012 *)
%Y Intersection of A005843 and A173186.
%Y Cf. A088033.
%K nonn,changed
%O 1,1
%A _Amarnath Murthy_, Sep 19 2003
%E More terms from _Ray Chandler_, Sep 23 2003
%E Offset changed by _Andrew Howroyd_, Sep 22 2024