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 A104302 #16 Jul 15 2025 08:26:45 %S A104302 941,25169,169144121,302529162809,110251081610609,166411638416129, %T A104302 497294928448841,580815760057121,930259241691809,123201122500121801, %U A104302 139129138384137641,140625139876139129,196249195364194481,214369213444212521,235225234256233289,261121260100259081 %N A104302 Primes which are the reverse concatenation of three consecutive square numbers. %H A104302 Amiram Eldar, <a href="/A104302/b104302.txt">Table of n, a(n) for n = 1..10000</a> (terms 1..1000 from Harvey P. Dale) %e A104302 The first term is 941 which is a prime and is the reverse concatenation of 1, 4 and 9 which are three consecutive square numbers. %t A104302 Select[FromDigits[Flatten[IntegerDigits/@#]]&/@(Reverse/@Partition[Range[500]^2,3,1]),PrimeQ] (* _Harvey P. Dale_, Sep 21 2024 *) %Y A104302 Cf. A104301, A104303, A104304. %K A104302 base,nonn %O A104302 1,1 %A A104302 _Shyam Sunder Gupta_, Apr 17 2005