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 A184857 #11 May 19 2019 13:32:48 %S A184857 2,5,7,11,15,20,24,26,30,34,39,45,50,53,64,68,69,72,83,87,88,96,106, %T A184857 115,121,122,125,126,134,141,144,145,159,163,178,179,197,198,201,221, %U A184857 227,232,236,240,246,251,254,259,265,273,274,278,284,289,292,293,303,308,311,316,318,322,331,342,346,356,360,361,365,375,379,380,384,388,399,407,409,413,417,418,426,428,432,437,455,460,470,475,479,489,498,504,512,513,519,523,542,543,546,555,557,561,576,581,595,599 %N A184857 Numbers k such that floor(k*e/(e-1)) is prime. %e A184857 See A077545. %t A184857 (See A077545.) %t A184857 Select[Range[600],PrimeQ[Floor[# E/(E-1)]]&] (* _Harvey P. Dale_, Jan 25 2011 *) %Y A184857 Cf. A077545, A184856, A184858. %K A184857 nonn %O A184857 1,1 %A A184857 _Clark Kimberling_, Jan 23 2011