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 A107295 #15 Jan 06 2024 21:58:54 %S A107295 2,4,12,14,20,42,48,56,60,88,104,120,126,134,138,160,164,182,186,204, %T A107295 226,254,270,276,312,316,330,336,350,382,408,410,414,422,438,448,450, %U A107295 480,492,494,502,522,546,568,580,596,620,624,640,650,690,696 %N A107295 Numbers k such that prime(k^2) - k^2 is prime. %e A107295 88 is in the sequence because prime(88^2) - 88^2 = prime(7744) - 7744 = 78977 - 7744 = 71233 = prime(7051). %t A107295 Select[Range[700],PrimeQ[Prime[#^2]-#^2]&] (* _Harvey P. Dale_, Jun 20 2015 *) %o A107295 (PARI) isok(n) = isprime(prime(n^2) - n^2); \\ _Michel Marcus_, Oct 09 2013 %Y A107295 Cf. A064269 (prime(n)-n is prime), A141129 (prime(n^2)-n^2). %K A107295 nonn %O A107295 1,1 %A A107295 _Zak Seidov_, May 20 2005 %E A107295 More terms from _Michel Marcus_, Oct 09 2013