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 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 Table of n, a(n) for n=1..15. 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

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Last modified February 23 15:29 EST 2024. Contains 370283 sequences. (Running on oeis4.)