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 A182354 #7 Apr 26 2012 12:16:23 %S A182354 3,5,11,67,163,10243,22531,7516192771,43980465111043, %T A182354 142788163609707759784588649053552643, %U A182354 2637188343637273091841153207596203638787 %N A182354 Primes of the form n*2^n + 3. %C A182354 These are similar to the Woodall primes, A050918, which are primes of the form n*2^n - 1. %e A182354 3 = 0*2^0 + 3; 5 = 1*2^1 + 3; 11 = 2*2^2 + 3; 67 = 4*2^4 + 3 %p A182354 #choose N large, then S is the desired set %p A182354 f:=n->n*2^n + 3: %p A182354 S:={}: %p A182354 for n from 0 to N do if(isprime(f(n))) then S:=S union {f(n)}: fi: od %Y A182354 Cf. A050918, A182352, A182353. %K A182354 nonn %O A182354 1,1 %A A182354 _Patrick Devlin_, Apr 25 2012