42 is the answer of the universe.
37 is the 12th prime
73 is the 21st prime
also if you do it in 3d you see other patterns,as well as with other bases
also @Guzman_Tierno in your direct fibbonachi it gets mod(9+7,10)=6.000001?
okay i found something new:it creates different patterns in different bases
Wait thats kinda cool