cp's OEIS Frontend

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.

A076893 Number of inequivalent linear ternary codes of length n with no zero columns. Also the number of nonisomorphic loopless ternary matroids on an n-set.

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%I A076893 #10 Aug 26 2025 15:17:50
%S A076893 1,2,4,9,19,49,131,424,1652,8719,69825,989873,26581301,1318262256,
%T A076893 114250250466,16765968053831,4100014001380089,1664142340751871950,
%U A076893 1116818491052884840894,1241182654624957299191014,2281173954695869520832771726,6954114729274902830973149757397,35138195971007372542783032580880899
%N A076893 Number of inequivalent linear ternary codes of length n with no zero columns. Also the number of nonisomorphic loopless ternary matroids on an n-set.
%D A076893 M. Wild, Enumeration of binary and ternary matroids and other applications of the Brylawski-Lucas Theorem, Preprint 1693, Technische Hochschule Darmstadt, 1994.
%H A076893 A. Evnin, <a href="https://www.mathnet.ru/eng/mo412">An elementary Introduction to Matroids</a>, Mathematical Education 2 (33) (2005), 2-33.
%H A076893 Harald Fripertinger, <a href="https://www.mathe2.uni-bayreuth.de/frib/codes/tables_12.html">T_nk3: Number of the isometry classes of all ternary (n,r)-codes for 1 <= r <= k without zero-columns</a>, 2016.
%Y A076893 Cf. A034343.
%K A076893 nonn,changed
%O A076893 1,2
%A A076893 Marcel Wild (mwild(AT)sun.ac.za), Nov 26 2002
%E A076893 a(11)-a(23) from Fripertinger's table added by _Andrei Zabolotskii_, Aug 26 2025