A104159 Numbers on a Manchester or Log-End dartboard, as read in a standard, clockwise direction.

4, 20, 1, 16, 6, 17, 8, 12, 9, 14, 5, 19, 2, 15, 3, 18, 7, 11, 10, 13, 4, 20, 1, 16, 6, 17, 8, 12, 9, 14, 5, 19, 2, 15, 3, 18, 7, 11, 10, 13, 4, 20, 1, 16, 6, 17, 8, 12, 9, 14, 5, 19, 2, 15, 3, 18, 7, 11, 10, 13, 4, 20, 1, 16, 6, 17, 8, 12, 9, 14, 5, 19, 2, 15, 3

Offset

1,1

Comments

Sequence is periodic with period 20. - Michel Marcus, Jul 26 2013

Links

Paolo Xausa, Table of n, a(n) for n = 1..10000

K. S. Brown, The Dartboard Sequence

Sven Silow, Why this particular numbering scheme?

Index entries for linear recurrences with constant coefficients, signature (0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1).

Mathematica

PadRight[{}, 100, {4, 20, 1, 16, 6, 17, 8, 12, 9, 14, 5, 19, 2, 15, 3, 18, 7, 11, 10, 13}] (* Paolo Xausa, Jul 14 2025 *)

Crossrefs

Cf. A003833, A104158.

Sequence in context: A002813 A263973 A364519 * A039921 A081852 A050017

Adjacent sequences: A104156 A104157 A104158 * A104160 A104161 A104162

Keyword

nonn,easy

Author

Andrew G. West (WestA(AT)wlu.edu), Mar 09 2005

Status

approved