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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A340255 Lexicographically earliest sequence of distinct nonnegative terms such that for any n >= 0, a(n+1) is obtained by altering the leftmost digit (which is not a leading zero) in the factorial base representation of a(n) or if this is not possible by altering the rightmost leading zero in the factorial base representation of a(n). 2
 0, 1, 3, 5, 4, 2, 8, 14, 20, 18, 6, 12, 16, 10, 22, 23, 11, 17, 13, 7, 19, 21, 9, 15, 39, 63, 87, 111, 99, 27, 51, 75, 81, 33, 57, 105, 117, 45, 69, 93, 91, 43, 67, 115, 97, 25, 49, 73, 79, 31, 55, 103, 109, 37, 61, 85, 89, 41, 65, 113, 101, 29, 53, 77, 83, 35 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS This sequence appears to be a permutation of the nonnegative integers. LINKS Rémy Sigrist, Table of n, a(n) for n = 0..5039 Rémy Sigrist, PARI program for A340255 Index entries for sequences related to factorial base representation EXAMPLE The first terms, alongside their representation in factorial base, are: n a(n) fact(a(n)) --- ---- ---------- 0 0 0 1 1 1 2 3 11 3 5 21 4 4 20 5 2 10 6 8 110 7 14 210 8 20 310 9 18 300 10 6 100 11 12 200 12 16 220 13 10 120 14 22 320 15 23 321 16 11 121 PROG (PARI) See Links section. CROSSREFS See A340250 for similar sequences. Sequence in context: A075077 A196771 A266121 * A340256 A354247 A349943 Adjacent sequences: A340252 A340253 A340254 * A340256 A340257 A340258 KEYWORD nonn,base AUTHOR Rémy Sigrist, Jan 02 2021 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 July 12 21:16 EDT 2024. Contains 374257 sequences. (Running on oeis4.)