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 A175558 #11 Feb 23 2015 15:05:14 %S A175558 1,167,27889,4657463,777796321,129891985607,21691961596369, %T A175558 3622557586593623,604967116961135041,101029508532509551847, %U A175558 16871927924929095158449,2817611963463158891460983,470541197898347534873984161,78580380049024038323955354887,13122923468187014400100544266129,2191528219187231404816790892443543,365985212604267644604404079038071681,61119530504912696648935481199357970727 %N A175558 a(n) = 167^n. %t A175558 167^Range[0,20] (* or *) NestList[167#&,1,20] (* _Harvey P. Dale_, Feb 23 2015 *) %Y A175558 Cf. A175559, A175560, A175552. %K A175558 nonn,easy %O A175558 0,2 %A A175558 _N. J. A. Sloane_, Dec 03 2010