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 A141826 #5 Mar 31 2012 13:23:39 %S A141826 0,4,3,12,16,19,20,7,8,15,11,23,77,73,74,85,86,78,82,90,94,89,93,81, %T A141826 63,60,64,71,67,51,48,56,59,68,55,52,108,112,111,104,107,119,115,99, %U A141826 96,103,100,116,46,45,42,29,25,34,33,41,37,26,38,30 %N A141826 Bisect sequence A057113. %C A141826 Since A057113 is generated based on A057112(n) and successive transpositions, we can be assured that A141826(n) will always map (using A055089)to permutation with an even number of transpositions (applicable, e.g. to the Icosahedron and truncated icosahedron studied in the Geometry Center at http://www.scienceu.com/geometry/facts/solids/handson.html ). %e A141826 A057113(n)is 0 1 4 5 3 2 12 13 16 22 19 18 20 10 7 6 8 14 15 9 11 21 23 17 77... so the sequence begins 0 4 3 12 16 19 20 7 8 15 11 23 77 ... %Y A141826 Cf. A055089, A057112, A057113. %K A141826 easy,nonn %O A141826 0,2 %A A141826 _Alford Arnold_, Aug 07 2008 %E A141826 More terms from _Alford Arnold_, Aug 18 2008