A055100 - OEIS

A055100

In the game of backgammon, the number of blot hitting rolls when the blot is n points away, n=1,2,...,24.

11, 12, 14, 15, 15, 17, 6, 6, 5, 3, 2, 3, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0, 0, 1

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

A finite sequence, since a(25) does not exist (a blot cannot be 25 pips away, neither can 25 pips be rolled with two dice). In backgammon, if a double is rolled then the number is played four times, not twice. Hence a roll of 2-2 hits a blot 8 pips away.

LINKS

Table of n, a(n) for n=1..24.

EXAMPLE

a(1)=11 since only these rolls hit: 11, 12, 13, 14, 15, 16, 21, 31, 41, 51, 61. a(8)=6 since only these rolls hit: 22, 26, 35, 44, 53, 62. a(13)=0 since no roll hits.

CROSSREFS

Sequence in context: A061082 A231870 A231874 * A247849 A088134 A221699

Adjacent sequences: A055097 A055098 A055099 * A055101 A055102 A055103

KEYWORD

easy,fini,full,nonn

AUTHOR

David Brotherton (dbroth02(AT)aol.com), Jun 13 2000

STATUS

approved