%I #9 Jun 22 2017 06:34:22
%S 0,1,6,21,55,120,231,406,665,1035,1540,2211
%N Erroneous version of A002817.
%D D. M. Jackson and G. H. J. van Rees, The enumeration of generalized double stochastic nonnegative integer square matrices, SIAM J. Comput., 4 (1975), 474-477.
%H D. M. Jackson & G. H. J. van Rees, <a href="/A002817/a002817.pdf">The enumeration of generalized double stochastic nonnegative integer square matrices</a>, SIAM J. Comput., 4.4 (1975), 474-477. (Annotated scanned copy)
%K dead
%O 0,3