This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A167741 #23 Sep 04 2025 20:40:41
%S A167741 41,281,5849,8209,11801,29921,33569,51929,70489,77969,128201,139609,
%T A167741 196769,219689,346321,415801,450649,532241,543929,602489,625969,
%U A167741 684809,743849,755681,767521,922169,934121,946081,958049
%N A167741 Primes that become squares when prefixed with an 8.
%C A167741 Subsequence of primes of A273363. - _Michel Marcus_, Jun 24 2016
%H A167741 Alois P. Heinz, <a href="/A167741/b167741.txt">Table of n, a(n) for n = 1..20000</a> (first 131 terms from Vincenzo Librandi)
%t A167741 Select[Prime[Range[10000]], IntegerQ[Sqrt[FromDigits[Join[{8}, IntegerDigits[#]]]]]&] (* _G. C. Greubel_, Jun 23 2016 *)
%t A167741 Select[Prime[Range[80000]],IntegerQ[Sqrt[8*10^IntegerLength[#]+#]]&] (* _Harvey P. Dale_, Jan 29 2023 *)
%Y A167741 Cf. A167734, A167735, A167736, A167737, A167738, A167739, A167740.
%Y A167741 Cf. A273363.
%K A167741 base,nonn,changed
%O A167741 1,1
%A A167741 _Claudio Meller_, Nov 10 2009
%E A167741 Definition corrected and sequence extended by _Michel Marcus_, Aug 05 2013