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A059852 Consider the English alphabet in the International Morse radio telegraph code. Map a 'dit' to the digit one and a 'dah' to the digit 2, then express that ternary number in decimal. 4
5, 67, 70, 22, 1, 43, 25, 40, 4, 53, 23, 49, 8, 7, 26, 52, 77, 16, 13, 2, 14, 41, 17, 68, 71, 76 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

F in Morse is .._. This becomes 1121 in ternary and 43 in decimal, so a(6) = 43.

REFERENCES

"Learning the Radiotelegraph Code," Seventh Edition, published by American Radio Relay League, West Hartford 7, Connecticut, 1955.

"Morse Code Course," Jeppesen and Company, Denver, Colorado, 1962.

"International Morse Code," prepared by Lt. Commander F.R.L. Tuthill, USNR and Lt. (J.G.) E.L. Battey, USNR, published by Insuline Corporation of America, Long Island City, NY.

LINKS

Table of n, a(n) for n=1..26.

CROSSREFS

Sequence in context: A156597 A059489 A197161 * A057171 A185230 A142009

Adjacent sequences:  A059849 A059850 A059851 * A059853 A059854 A059855

KEYWORD

base,easy,fini,full,nonn,word

AUTHOR

Robert G. Wilson v, Feb 27 2001

STATUS

approved

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Last modified June 25 21:43 EDT 2019. Contains 324357 sequences. (Running on oeis4.)