The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A128440 Array T by antidiagonals: T(n,k)=Floor(k*t^n) where t=golden ratio=(1+sqrt(5))/2. 3
 1, 3, 2, 4, 5, 4, 6, 7, 8, 6, 8, 10, 12, 13, 11, 9, 13, 16, 20, 22, 17, 11, 15, 21, 27, 33, 35, 29, 12, 18, 25, 34, 44, 53, 58, 46, 14, 20, 29, 41, 55, 71, 87, 93, 76, 16, 23, 33, 47, 66, 89, 116, 140, 152, 122, 17, 26, 38, 54, 77, 107, 145, 187, 228, 245, 199, 19, 28, 42, 61 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Row 1 = Lower Wythoff sequence = A000201; Row 2 = Upper Wythoff sequence = A001950; Column 1 = A014217 (after first term); T(n,n) = A128440(n). Every positive integer occurs exactly once in the first two rows. LINKS FORMULA a(n)=k*F(n-1)+Floor(k*t*F(n)), where F=A000045, the Fibonacci numbers. EXAMPLE Northwest corner: 1 3 4 6 8 9 2 5 7 10 13 15 4 8 12 16 21 25 6 13 20 27 34 41 CROSSREFS Cf. A000045, A000201, A001950, A128439. Sequence in context: A070221 A020814 A286298 * A063201 A173258 A039858 Adjacent sequences:  A128437 A128438 A128439 * A128441 A128442 A128443 KEYWORD nonn,tabl AUTHOR Clark Kimberling, Mar 03 2007 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified June 1 02:09 EDT 2020. Contains 334758 sequences. (Running on oeis4.)