A105387 Morse code alphabet where "-" = 0 and "." = 1, binary converted to decimal.

2, 7, 5, 3, 1, 13, 1, 15, 3, 8, 2, 11, 0, 1, 0, 9, 2, 5, 7, 0, 6, 14, 4, 6, 4, 3

Offset: 1

Author

Bryan Jacobs (bryanjj(AT)gmail.com), Apr 02 2005

Keywords

• full
• nonn
• fini

Comments

Hamming weight A000120(a(n)) gives number of dashes in the Morse code of the n-th letter. A008777 allows us to know how many leading zeros a term should have. A059852 is a better (unambiguous) variant. - M. F. Hasler, Jun 23 2020

Examples

			a(3) = 'C' = "-.-." -> 0101 (binary) = 5.
		

Links

• Omniglot, Morse Code

Crossrefs

Cf. A105386, A059852 (Morse alphabet), A000120 (binary weight), A008777 (number of dots and dashes in Morse code for n-th letter).

Programs

PARI

A105387=[fromdigits([2-d|d<-digits(t,3)],2)|t<-A059852] \\ M. F. Hasler, Jun 23 2020

Extensions

Name and crossrefs edited by M. F. Hasler, Jun 23 2020