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 A034328 #12 Jul 08 2025 20:14:17 %S A034328 1,1,1,1,2,1,1,3,3,1,1,4,6,4,1,1,6,12,11,5,1,1,7,20,26,17,6,1,1,9,33, %T A034328 58,52,25,7,1,1,11,52,121,146,95,35,8,1,1,13,78,240,388,334,162,47,9, %U A034328 1,1,15,113,454,975,1123,710,262,61,10,1,1,18,163,835,2365 %N A034328 Triangle read by rows: T(n,k) = number of loopless, regular k X n-matrix matroids of dimension k (or n-matroids of rank k). %D A034328 Computed by Harald Fripertinger (fripert(AT)kfunigraz.ac.at). %H A034328 H. Fripertinger, <a href="http://www.mathe2.uni-bayreuth.de/frib/codes/tables.html">Isometry Classes of Codes</a> %H A034328 <a href="/index/Coa#codes_binary_linear">Index entries for sequences related to binary linear codes</a> %H A034328 <a href="/index/Mat#matroid">Index entries for sequences related to matroids</a> %e A034328 1; 1,1; 1,2,1; 1,3,3,1; 1,4,6,4,1; 1,6,12,11,5,1; 1,7,20,26,17,6,1; ... %Y A034328 Cf. A034356, A034327. %K A034328 nonn,tabl %O A034328 0,5 %A A034328 _N. J. A. Sloane_ %E A034328 Description corrected by Harald Fripertinger, Nov 14 2007