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 A235149 #10 May 20 2023 09:49:22 %S A235149 43,61,67,229,241,271,283,409,421,439,457,601,643,661,673,2011,2017, %T A235149 2029,2113,2131,2161,2179,2221,2269,2287,2293,2341,2389,2437,2467, %U A235149 2521,2551,2557,2707,2749,2791,2803,2833,2857,4003,4027,4051,4093,4129,4159,4201,4339,4357 %N A235149 Primes p such that (p reversed) + 7 is also a prime. %H A235149 Vincenzo Librandi, <a href="/A235149/b235149.txt">Table of n, a(n) for n = 1..1000</a> %t A235149 Select[Prime[Range[6000]], PrimeQ[FromDigits[Reverse[IntegerDigits[#]]] + 7]&] %t A235149 Select[Prime[Range[600]],PrimeQ[IntegerReverse[#]+7]&] (* _Harvey P. Dale_, May 20 2023 *) %o A235149 (Magma) [p: p in PrimesUpTo(6000) | IsPrime(q+7) where q is Seqint(Reverse(Intseq(p)))]; %Y A235149 Cf. A165446, A166501, A167460, A167466, A167473. %K A235149 nonn,base %O A235149 1,1 %A A235149 _Vincenzo Librandi_, Jan 04 2014