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 A342185 #17 Mar 18 2021 05:56:07 %S A342185 2,11,23,101,149,227,239,269,353,479,557,569,647,683,809,827,983,1289, %T A342185 1607,1619,1823,1901,1907,2039,2213,2411,2447,2843,2879,2957,2963, %U A342185 3011,3119,3257,3389,3557,3671,3833,3923,4001,4019,4397,4943,5099,5309,5441,5471 %N A342185 Primes q such that 10*q-1 and 10*q+3 are cousin primes. %C A342185 A pair of cousin primes are primes of the form p and p+4 (where p+2 may or may not be a prime). %C A342185 Generates cousin primes such that the last digits of the primes are 9 and 3 in base 10. %o A342185 (PARI) isok(p) = isprime(p) && isprime(10*p-1) && isprime(10*p+3); \\ _Michel Marcus_, Mar 05 2021 %Y A342185 Cf. A046132, A342184, A342183. %K A342185 nonn %O A342185 1,1 %A A342185 _Tamas Nagy_, Mar 04 2021