Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I #11 Sep 16 2015 04:54:21
%S 1,1,3,9,58,384
%N Row sums of A261242: number of connected binary bisymmetric n X n matrices B with B[1,1] = 1 = B[2,2].
%C For the definition of a connected binary bisymmetric n X n matrix B with the four corners occupied by 1s see the comment under A261242.
%Y Cf. A261242.
%K nonn,more
%O 1,3
%A _Wolfdieter Lang_ and _Kival Ngaokrajang_, Aug 18 2015