%I #14 Sep 13 2021 22:20:57

%S 1,2,3,8,19,44,111,282,721,1880,4953,13152

%N Number of Baxter matrices of size n X (n+1) with two 1's in each row.

%Y Cf. A347679.

%K nonn,more

%O 1,2

%A _Don Knuth_, Sep 11 2021