This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A248873 a(n) = floor(e^(n+1)-e^n). 2
 1, 4, 12, 34, 93, 255, 693, 1884, 5122, 13923, 37847, 102880, 279658, 760190, 2066413, 5617093, 15268842, 41505016, 112822331, 306682894, 833650539, 2266097111, 6159890600, 16744318683, 45515777207, 123724710091, 336318631172, 914208823689, 2485077232852, 6755140284380 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS e^(n+1)-e^n-1 < a(n) <= A064780(n) <= a(n)+1 < e^(n+1)-e^n+1. Lim_{n->infinity} a(n)/e^(n+1) = (e-1)/e. [Corrected by Altug Alkan, Apr 25 2018] LINKS Danny Rorabaugh, Table of n, a(n) for n = 0..1000 Eric Weisstein's World of Mathematics, e Eric Weisstein's World of Mathematics, Floor Function FORMULA a(n) = floor(e^(n+1)-e^n). MATHEMATICA Floor[#[[2]]-#[[1]]]&/@Partition[E^Range[0, 30], 2, 1] (* Harvey P. Dale, Jul 24 2018 *) PROG (PARI) vector(30, n, n--; floor(exp(n+1)-exp(n))) \\ Michel Marcus, Mar 06 2015 CROSSREFS Cf. A000149, A064780, A068996. Sequence in context: A307305 A107069 A176753 * A180224 A293005 A173412 Adjacent sequences:  A248870 A248871 A248872 * A248874 A248875 A248876 KEYWORD nonn,easy AUTHOR Danny Rorabaugh, Mar 04 2015 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 April 24 12:21 EDT 2019. Contains 322429 sequences. (Running on oeis4.)