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A049747 Array T read by diagonals; T(i,j)=number of directions from (0,0) to lattice points in first-quadrant portion of disk with radius (0,0)-to-(i,j). 11

%I

%S 0,2,2,3,3,3,5,5,5,5,9,7,5,7,9,13,11,9,9,11,13,19,15,11,11,11,15,19,

%T 23,21,17,13,13,17,21,23,31,25,21,19,17,19,21,25,31,39,35,27,23,23,23,

%U 23,27,35,39,49,41,35,29,25,25,25,29,35,41,49

%N Array T read by diagonals; T(i,j)=number of directions from (0,0) to lattice points in first-quadrant portion of disk with radius (0,0)-to-(i,j).

%e Diagonals (each starting on row 1): {0}; {2,2}; {3,3,3}; ...

%K nonn,tabl

%O 0,2

%A _Clark Kimberling_

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Last modified March 29 15:16 EDT 2020. Contains 333107 sequences. (Running on oeis4.)