Building on work by Yang and Gao, we explore links between the enumeration of lattice paths with steps (1,1), (1,–1), (1,0) and (2,0), Riordan arrays, continued fractions and a conjectured link to Somos-4 sequences. The study gives insights into the Pascal rhombus and its Riordan array generalizations. We rely on the A-matrix definition of Riordan arrays first defined by Merlini, Rogers, Sprugnoli, and Verri for many of our results.