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 A268577 #8 Sep 08 2022 08:46:15 %S A268577 2,4,6,18,22,24,28,32,34,38,46,48,56,62,66,84,88,98,104,106,122,126, %T A268577 132,148,154,158,164,172,174,182,192,214,218,224,242,244,252,258,274, %U A268577 276,284,286,288,308,312,318,326,328,336,342,346,356,358,368,372,374 %N A268577 Numbers m such that 3*m^2-5 is a prime. %t A268577 Select[Range[2, 500], PrimeQ[3 #^2 - 5] &] %o A268577 (Magma) [n: n in [2..400] | IsPrime(3*n^2-5)]; %Y A268577 Cf. A201717 (associated primes). %K A268577 nonn %O A268577 1,1 %A A268577 _Vincenzo Librandi_, Feb 16 2016