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!)
 A105449 Positive integers whose representation as Roman Fibonacci numbers has exactly four symbols. 4
 80, 106, 114, 116, 117, 119, 120, 121, 122, 127, 129, 130, 135, 137, 138 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS A105446 gives the number of symbols in Roman Fibonacci numbers. A105447 gives positive integers whose representation as Roman Fibonacci numbers has exactly two symbols. A105448 gives positive integers whose representation as Roman Fibonacci numbers has exactly three symbols. A105450 gives positive integers whose representation as Roman Fibonacci numbers has exactly five symbols. LINKS FORMULA a(n) is an element of A105449 iff A105446(n) = 4. EXAMPLE In Roman Fibonacci number representation: 80 = "DB22", 106 = "EA22", 114 = "DD22", 116 = "DD33", 117 = "DD52", 119 = "DD81", 120 = "DD55", 121 = "DD2A", 122 = "DD1A", 127 = "BF22", 129 = "BF33", 130 = "BF52", 135 = "AF22", 137 = "AF33", 138 = "AF52". CROSSREFS Cf. A000045, A006968, A105446-A105448, A105450-A105455. Sequence in context: A039545 A322162 A143755 * A223084 A043223 A039400 Adjacent sequences:  A105446 A105447 A105448 * A105450 A105451 A105452 KEYWORD base,easy,nonn AUTHOR Jonathan Vos Post, Apr 09 2005 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 January 26 06:28 EST 2021. Contains 340434 sequences. (Running on oeis4.)