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 A060174 #14 Feb 07 2025 15:33:52 %S A060174 1,4,32,320,3536,41344,501264,6232736,78948912,1014329856,13178920016, %T A060174 172789849952,2282474558160,30340247738176,405461900524400, %U A060174 5443463231234592,73372619284217776,992459740253399360,13465895431077568080,183211658096891394848,2498857102607629076880 %N A060174 Dimensions of graded algebra associated with forest meanders (subalgebra version). %C A060174 Number of meander slices with 2n crossings which are closed on one side and whose loops are all even. A loop is even if it has its least point at an even index with crossings numbered from zero. - _Andrew Howroyd_, Feb 07 2025 %H A060174 Roland Bacher, <a href="https://www-fourier.ujf-grenoble.fr/sites/default/files/ref_478.pdf">Meander algebras</a>, Institut Fourier, UMR 5582, Laboratoire de Mathématiques, 1999. %Y A060174 Meander sequences in Bacher's paper: A005315, A060066, A060089, A060111, A060148, A060149, A060174, A060198, A060206. %K A060174 nonn %O A060174 0,2 %A A060174 _N. J. A. Sloane_, Apr 10 2001 %E A060174 Offset corrected and a(7) onwards from _Andrew Howroyd_, Jan 31 2025