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 A151716 #4 Jul 22 2025 06:15:32 %S A151716 1,2,5,7,9,13,14,25,27,29,30,31,32,35,37,39,43,46,48,51,52,60,61,62, %T A151716 65,67,69,70,71,72,75,77,79,80,81,82,85,87,89,90,91,92,95,97,99,105, %U A151716 107,109,113,114,125,127,129,130,131,132,135,137,139,143,146,148,151,152 %N A151716 Positive integers whose Spanish names contain a prime number of letters. %C A151716 1 = uno (3 letters, 3 is prime); 7 = siete (5 letters, 5 is prime) %Y A151716 Cf. A072685 %K A151716 nonn,word %O A151716 1,2 %A A151716 _Claudio Meller_, Jun 08 2009