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 A182352 #6 Apr 26 2012 12:17:27 %S A182352 5,61,157,229373,1048573,2228221,584115552253,10445360463869, %T A182352 1448241753615514100500122329229605507956733, %U A182352 8380834989110329694147210304728253347914979574441574397 %N A182352 Primes of the form n*2^n - 3. %C A182352 These are similar to the Woodall primes, A050918, which are primes of the form n*2^n-1. %e A182352 5 = 2*2^2 - 3; 61 = 4*2^4 - 3. %p A182352 #choose N large, then S is the desired set %p A182352 f:=n->n*2^n - 3: %p A182352 S:={}: %p A182352 for n from 0 to N do if(isprime(f(n))) then S:=S union {f(n)}: fi: od %Y A182352 Cf. A050918. %K A182352 nonn %O A182352 1,1 %A A182352 _Patrick Devlin_, Apr 25 2012