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 A108727 #16 Nov 12 2019 14:33:20 %S A108727 0,2,6,12,18,20,26,32,38,56,60,66,72,80,86,90,96,98,102,116,122,128, %T A108727 132,138,140,146,156,168,170,180,188,192,206,210,222,228,240,242,252, %U A108727 266,270,272,276,278,290,300,312,318,326,336,342,350,356,362,366,368,380 %N A108727 Numbers n such that 11*n + 31 is prime. %H A108727 Daniel Starodubtsev, <a href="/A108727/b108727.txt">Table of n, a(n) for n = 1..10000</a> %e A108727 If n=0, then 11*n + 31 = 31 (prime). %e A108727 If n=56, then 11*n + 31 = 647 (prime). %p A108727 a:=proc(n) if isprime(11*n+31)=true then n else fi end: seq(a(n),n=0..450); # _Emeric Deutsch_, Jun 26 2005 %t A108727 Select[Range[0,400],PrimeQ[11#+31]&] (* _Harvey P. Dale_, Nov 02 2011 *) %o A108727 (PARI) is(n)=isprime(11*n+31) \\ _Charles R Greathouse IV_, Jun 13 2017 %Y A108727 Cf. A108233. %K A108727 nonn,easy %O A108727 1,2 %A A108727 _Parthasarathy Nambi_, Jun 21 2005 %E A108727 More terms from _Emeric Deutsch_, Jun 26 2005