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 A054156 #4 Mar 30 2012 16:48:45 %S A054156 1,1,2,2,5,4,12,14,27,39,77,116,223,366,679,1206,2249,4077,7684,14262, %T A054156 26997,50885,96908,184270,352692,674963,1296828,2493344,4806077, %U A054156 9272049,17920859,34668378,67158970,130213873,252745350,490980258 %N A054156 Moebius transform of A000029 (starting at term 0). %K A054156 nonn %O A054156 0,3 %A A054156 _N. J. A. Sloane_, Apr 29 2000