The phrase "corresponding number" refers to a number that matches or goes together with another number based on a specific relationship or pattern. Full definition
-LSB--RSB- = one space [@] = door [%] = locked door [+] = door sealed by magic [#] = pitfall [x] = pitfall landing [f] = both pitfall and pitfall landing [*] = treasure or event, listed by coordinates under map [e] = entrance [E] = exit (where applicable)[u] = stairs going up (with corresponding numbers if necessary)[d] = stairs going down Upon entering a cave, dungeon, or tower (referred to hereafter simply as «dungeons»), you will be facing one of the cardinal directions. (crunkgames.com)
Yet with the QWERTY keyboard, 20 percent of all English digraphs are typed by adjacent fingers, and more than 4 percent (such as the common ed) by the same finger; corresponding numbers for the Dvorak keyboard are only 2 percent and 1 percent, respectively. (discovermagazine.com)
The colors and corresponding numbers on the mouse chromosomes (L) indicate the human chromosomes (R) containing homologous (similar) segments. (science.howstuffworks.com)