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 A167738 #17 Sep 04 2025 21:16:48
%S A167738 29,929,2441,3361,4289,7121,8081,9049,19841,34361,49081,61001,76081,
%T A167738 88289,94441,112121,121169,148361,193841,230369,239521,276209,322249,
%U A167738 377761,414929,461569,536609,564881,583769,602689,621641,707321,745609
%N A167738 Primes that become squares when prefixed with a 5.
%H A167738 Alois P. Heinz, <a href="/A167738/b167738.txt">Table of n, a(n) for n = 1..20000</a> (first 156 terms from Vincenzo Librandi)
%t A167738 Select[Prime[Range[10000]], IntegerQ[Sqrt[FromDigits[Join[{5}, IntegerDigits[#]]]]]&] (* _G. C. Greubel_, Jun 23 2016 *)
%Y A167738 Cf. A167734, A167735, A167736, A167737, A167739, A167740, A167741.
%K A167738 base,nonn,changed
%O A167738 1,1
%A A167738 _Claudio Meller_, Nov 10 2009
%E A167738 More terms from _Michel Marcus_, Aug 05 2013