Number of n X 2 0..3 arrays with successive rows and columns fitting to straight lines with nondecreasing slope, with a single point array taken as having zero slope.
A223069
Number of n X 2 0..3 arrays with successive rows and columns fitting to straight lines with nondecreasing slope, with a single point array taken as having zero slope.
Terms
- a(0) =16a(1) =150a(2) =1080a(3) =6627a(4) =36552a(5) =187000a(6) =905440a(7) =4206453a(8) =18933408a(9) =83153850a(10) =358250280a(11) =1520208679a(12) =6373759384a(13) =26468569500a(14) =109080982800a(15) =446806304505
External references
- oeis: A223069