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 A280916 Number of dashes in International Morse numeral representation of n. 5
 5, 4, 3, 2, 1, 0, 1, 2, 3, 4, 9, 8, 7, 6, 5, 4, 5, 6, 7, 8, 8, 7, 6, 5, 4, 3, 4, 5, 6, 7, 7, 6, 5, 4, 3, 2, 3, 4, 5, 6, 6, 5, 4, 3, 2, 1, 2, 3, 4, 5, 5, 4, 3, 2, 1, 0, 1, 2, 3, 4, 6, 5, 4, 3, 2, 1, 2, 3, 4, 5, 7, 6, 5, 4, 3, 2, 3, 4, 5, 6, 8, 7, 6, 5, 4, 3, 4, 5, 6, 7, 9, 8, 7, 6, 5, 4, 5, 6, 7, 8, 14, 13, 12, 11, 10, 9, 10, 11, 12, 13 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS The Morse Code is written in current ITU standard. LINKS Indranil Ghosh, Table of n, a(n) for n = 0..10000 Wikipedia, Morse code Wikipedia, International Telecommunication Union EXAMPLE For n = 4, the Morse numeral representation of 4 is "....-" i.e., 1 dash. So, a(4) = 1. For n = 26, the Morse numeral representation of 26 is "..--- -...." i.e, 4 dashes. So, a(26) = 4. PROG (Python) M={"1":".----", "2":"..---", "3":"...--", "4":"....-", "5":".....", "6":"-....", "7":"--...", "8":"---..", "9":"----.", "0":"-----"} def a(n):     s=str(n)     z=""     for i in s:         z+=M[i]+" "     return z[:-1].count("-") for i in range(0, 10001):     print str(a(i))+", ", CROSSREFS Cf. A006968, A278182, A280913. Sequence in context: A021652 A022961 A023447 * A307336 A031016 A261302 Adjacent sequences:  A280913 A280914 A280915 * A280917 A280918 A280919 KEYWORD nonn,base AUTHOR Indranil Ghosh, Jan 10 2017 STATUS approved

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Last modified January 23 07:07 EST 2020. Contains 331168 sequences. (Running on oeis4.)