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 A181886 Lower Beatty array of the golden ratio, (1+sqrt(5))/2. 3
 0, 1, 0, 5, 3, 0, 22, 15, 4, 0, 94, 66, 21, 6, 0, 399, 282, 92, 31, 8, 0, 1691, 1197, 393, 137, 41, 9, 0, 7164, 5073, 1668, 586, 181, 47, 11, 0, 30348, 21492, 7069, 2488, 773, 208, 57, 12, 0, 128557, 91044 (list; table; graph; refs; listen; history; text; internal format)
 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. LINKS Table of n, a(n) for n=1..47. 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 Cf. A181661, A000201, A001950, A000045. Sequence in context: A243381 A282887 A265729 * A126853 A286127 A201654 Adjacent sequences: A181883 A181884 A181885 * A181887 A181888 A181889 KEYWORD nonn,tabl AUTHOR Clark Kimberling, Nov 19 2010 STATUS approved

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Last modified July 23 17:49 EDT 2024. Contains 374553 sequences. (Running on oeis4.)