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 A155092 #7 Feb 10 2014 01:30:23 %S A155092 1,1,1,1,1,1,2,2,1,1,3,3,2,1,1,6,6,4,2,1,1,11,11,7,4,2,1,1,22,22,14,8, %T A155092 4,2,1,1,42,42,27,15,8,4,2,1,1,84,84,54,30,16,8,4,2,1,1,165,165,106, %U A155092 59,31,16,8,4,2,1,1,330,330,212,118,62,32,16,8,4,2,1,1,654,654,420,234,123,63 %N A155092 Matrix inverse of A155091. %C A155092 First column is A002083. Rows sums are A045690. %C A155092 Eigentriangle of A101688. - _Paul Barry_, Mar 01 2011 %e A155092 Table begins: %e A155092 1, %e A155092 1,1, %e A155092 1,1,1, %e A155092 2,2,1,1, %e A155092 3,3,2,1,1, %e A155092 6,6,4,2,1,1, %e A155092 11,11,7,4,2,1,1, %e A155092 22,22,14,8,4,2,1,1, %e A155092 42,42,27,15,8,4,2,1,1, %e A155092 84,84,54,30,16,8,4,2,1,1, %Y A155092 Cf. A002083, A045690. %K A155092 nonn,tabl %O A155092 1,7 %A A155092 _Mats Granvik_, Jan 20 2009