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A049702
Array T read by diagonals; T(i,j)=number of directions determined by 2 lattice points in [ 0,i ]x[ 0,j ].
1
0, 1, 1, 1, 4, 1, 1, 6, 6, 1, 1, 8, 8, 8, 1, 1, 10, 12, 12, 10, 1, 1, 12, 14, 16, 14, 12, 1, 1, 14, 18, 20, 20, 18, 14, 1, 1, 16, 20, 26, 24, 26, 20, 16, 1, 1, 18, 24, 28, 32, 32, 28, 24, 18, 1, 1, 20, 26, 34, 34, 40, 34, 34, 26, 20, 1, 1, 22, 30, 38
OFFSET
0,5
EXAMPLE
Diagonals (each starting on row 1): {0}; {1,1}; {1,4,1}; ...
CROSSREFS
Sequence in context: A267990 A084061 A140262 * A159040 A132046 A141540
KEYWORD
nonn,tabl
STATUS
approved