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A003833 Sectors around outside of darts board. 9
20, 1, 18, 4, 13, 6, 10, 15, 2, 17, 3, 19, 7, 16, 8, 11, 14, 9, 12, 5, 20, 1, 18, 4, 13, 6, 10, 15, 2, 17, 3, 19, 7, 16, 8, 11, 14, 9, 12, 5, 20, 1, 18, 4, 13, 6, 10, 15, 2, 17, 3, 19, 7, 16, 8, 11, 14, 9, 12, 5, 20, 1, 18, 4, 13, 6, 10, 15, 2, 17, 3, 19, 7, 16, 8, 11, 14, 9 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Known as the standard, London or clock dart board.

REFERENCES

Marilyn vos Savant, "Ask Marilyn," in 'Parade, The Sunday Newspaper Magazine,' page 12, Sunday, Jan 12, 2003.

LINKS

Table of n, a(n) for n=1..78.

K. S. Brown, The Dartboard Sequence

American Darts Organization, Home page

World Darts Federation, WDF Playing and Tournament Rules

CROSSREFS

Cf. A008575.

Sequence in context: A040416 A040417 A278414 * A040418 A140116 A084923

Adjacent sequences:  A003830 A003831 A003832 * A003834 A003835 A003836

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified November 22 03:20 EST 2019. Contains 329383 sequences. (Running on oeis4.)