16997993692domain: NAppears in sequencesNumber of (undirected) paths in the m X n king graph (triangle read by rows with m = 1..n and n = 1..).at n=18A307026Number of (undirected) paths in the 4 X n king graph.at n=5A358626Number of (undirected) paths in the 6 X n king graph.at n=3A358676