%I #5 Feb 25 2023 15:17:14

%S 1,12,129,1984,45945,1524156,68838217

%N Number of (undirected) paths in the 2 X n rook graph.

%Y Row 2 of A360877.

%Y Cf. A096121, A276356, A341500.

%K nonn,more

%O 1,2

%A _Andrew Howroyd_, Feb 25 2023