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 A090713 #17 Nov 02 2023 23:41:51 %S A090713 2,3,5,7,37,43,71,103,109,139,347,349,443,449,619,647,683,887,919, %T A090713 1259,1571,1601,1607,1741,1873,2083,2347,2417,2659,2689,4933,4967, %U A090713 4973,4999,5651,5783,5821,6163,6673,6803,6971,7079,7243,7351,7591 %N A090713 Primes whose base-17 expansion is a (valid) decimal expansion of a prime. %C A090713 See A235126 for the corresponding primes whose base-10 representation is the base-17 representation of the terms here. - _M. F. Hasler_, Jan 05 2014 %H A090713 Robert Price, <a href="/A090713/b090713.txt">Table of n, a(n) for n = 1..3754</a> %e A090713 The prime p = 37 is written 23 in base 17, and 23 is again a prime (when interpreted in base 10). Therefore p = 37 is a term of this sequence. %o A090713 (PARI) is_A090713(p)=vecmax(d=digits(p,17))<10&&isprime(vector(#d,i,10^(#d-i))*d~)&&isprime(p) \\ - _M. F. Hasler_, Jan 05 2014 %Y A090713 Cf. A090707 - A090721 and further references there. %K A090713 base,nonn %O A090713 1,1 %A A090713 _Cino Hilliard_, Jan 18 2004 %E A090713 Edited by _N. J. A. Sloane_, Feb 07 2007, and by _M. F. Hasler_, Jan 03 2014