The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A183292 Complement of A055999. 0
 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 27, 28, 29, 31, 32, 33, 34, 35, 36, 37, 38, 40, 41, 42, 43, 44, 45, 46, 47, 48, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 86, 87, 88, 89, 90 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Table of n, a(n) for n=1..80. FORMULA (See the Mathematica code.) MATHEMATICA a=1/2; b=7/2; F[n_]:=a*n^2+b*n; R[n_]:=(n/a+((b-1)/(2a))^2)^(1/2); G[n_]:=n-1+Ceiling[R[n]-(b-1)/(2a)]; Table[F[n], {n, 60}] Table[G[n], {n, 100}] PROG (PARI) a(n)=n-1+ceil(sqrt(8*n+25)/2-5/2) \\ Charles R Greathouse IV, Jan 20 2016 CROSSREFS Cf. A055999. Sequence in context: A028968 A029598 A184004 * A039193 A028798 A138309 Adjacent sequences: A183289 A183290 A183291 * A183293 A183294 A183295 KEYWORD nonn AUTHOR Clark Kimberling, Jan 03 2011 STATUS approved

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

Last modified August 13 07:30 EDT 2024. Contains 375113 sequences. (Running on oeis4.)