Number of n X 2 0..2 arrays with successive rows and columns fitting to straight lines with nondecreasing slope, with a single point array taken as having zero slope.

A222993

Number of n X 2 0..2 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) =9a(1) =50a(2) =222a(3) =867a(4) =3123a(5) =10660a(6) =35064a(7) =112373a(8) =353517a(9) =1097430a(10) =3374226a(11) =10302919a(12) =31301991a(13) =94757960a(14) =286108908a(15) =862258905a(16) =2595165345a(17) =7803321850a(18) =23447714310a(19) =70422834731a(20) =211436276379a(21) =634661150700

External references