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 A172053 #3 Mar 30 2012 18:52:38 %S A172053 1,22,27,36,41,46,53,65,68,77,82,99,103,112,124,128,134,139,149,162, %T A172053 176,183,193,206,225,232,237,243,249,276,282,287,293,301,330,339,346, %U A172053 351,358,371,385,402,405,408,413,434,443,454,457,479,482,497,505,510,522 %N A172053 n-th nonnegative number k such that neither 6*k+-1 is prime plus n-th number m such that 6*m+-1 are both twin primes. %F A172053 a(n)=A171696(n)+A002822(n). %Y A172053 Cf. A002822, A171696. %K A172053 nonn %O A172053 1,2 %A A172053 _Juri-Stepan Gerasimov_, Jan 24 2010 %E A172053 Entries checked by _R. J. Mathar_, May 22 2010