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 A259344 #18 Aug 30 2017 17:54:32 %S A259344 1,1,2,1,3,2,1,4,4,3,1,5,7,8,3,1,6,11,19,10,4,1,7,16,41,32,16,4,1,8, %T A259344 23,81,101,68,20,5 %N A259344 Array read by antidiagonals: number of inequivalent m X n (0,1)-matrices under permutation of rows and permutation and/or complementation of columns. %H A259344 M. A. Harrison, <a href="http://dx.doi.org/10.1109/T-C.1973.223649">On the number of classes of binary matrices</a>, IEEE Trans. Computers, 22 (1973), 1048-1051. See Table II. %H A259344 M. A. Harrison, <a href="/A000711/a000711.pdf">On the number of classes of binary matrices</a>, IEEE Transactions on Computers, C-22.12 (1973), 1048-1052. (Annotated scanned copy) %e A259344 The first few antidiagonals are: %e A259344 1, %e A259344 1,2, %e A259344 1,3,2, %e A259344 1,4,4,3, %e A259344 1,5,7,8,3, %e A259344 1,6,11,19,10,4, %e A259344 1,7,16,41,32,16,4, %e A259344 1,8,23,81,101,68,20,5, %e A259344 ... %Y A259344 For some rows, columns, diagonals see A006380, A006281, A006382, A006383. %Y A259344 The second row of the array starts 2,4,7,11,16,23, which does not identify it uniquely. %K A259344 nonn,tabl,more %O A259344 1,3 %A A259344 _N. J. A. Sloane_, Jun 27 2015