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.

A006725 Number of n-celled polygons with perimeter 2n+2 on square lattice.

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%I A006725 M1623 #16 Mar 31 2012 10:23:10
%S A006725 1,2,6,18,55,174,566,1868,6237,21050,71666,245696,847317,2937116,
%T A006725 10226574,35746292,125380257,441125966,1556301578,18155586993
%N A006725 Number of n-celled polygons with perimeter 2n+2 on square lattice.
%D A006725 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H A006725 I. G. Enting and A. J. Guttmann, <a href="http://dx.doi.org/10.1007/BF01112757">On the area of square lattice polygons</a>, J. Statist. Phys., 58 (1990), 475-484.
%K A006725 nonn
%O A006725 1,2
%A A006725 _N. J. A. Sloane_, _Simon Plouffe_
%E A006725 Title corrected by _David Bevan_, Sep 28 2011