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 A276148 #5 Aug 23 2016 22:14:36 %S A276148 3,9,5,27,15,15,21,81,15,45,33,45,39,63,7,243,51,25,57,135,35,99,69, %T A276148 135,75,117,45,189,87,21,93,729,55,153,105,75,111,171,65,405,123,105, %U A276148 129,297,21,207,141,405,147,225,85,351,159,75,165,567,95,261,177,63,183,279,105,2187,195,165,201,459,115,315,213,225,219,333,35,513,231 %N A276148 Even bisection of A276147. %H A276148 Antti Karttunen, <a href="/A276148/b276148.txt">Table of n, a(n) for n = 1..15015</a> %F A276148 a(n) = A276147(2*n). %o A276148 (Scheme) (define (A276148 n) (A276147 (* 2 n))) %Y A276148 Cf. A276147. %K A276148 nonn %O A276148 1,1 %A A276148 _Antti Karttunen_, Aug 23 2016