OFFSET
1,4
COMMENTS
Upper and lower Beatty arrays are defined at A181661.
(row 1)=A049652.
(column 1)=A000004.
(column 2)=A000201 (lower Wythoff sequence).
(column 3)=u(l(n))+l(u(n)), or simply ul+lu.
(column 4)=u(ul+lu)+l(uu+ll),
whereas column 4 of the upper Beatty array is
u(uu+ll)+l(ul+lu).
U(n,k)-L(n,k)=n for n>=1, k>=0.
EXAMPLE
Northwest corner of the array:
0....1....5....22....94....399...
0....3...15....66...282...1197...
0....4...21....92...393...1668...
0....6...31...137...586...2488...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Clark Kimberling, Nov 19 2010
STATUS
approved