

A064422


Football league numbers: the possible point series for a league of n teams playing each other twice where for each match 3 points are awarded to the winning team and 1 to each in the case of a tie.


4




OFFSET

1,2


COMMENTS

This series reflects the now common 3 point rule of international football where the sum of total points awarded depends on the outcome of each match. The classical 2 point rule is equivalent of that for chess tournaments (A047730).


LINKS

Table of n, a(n) for n=1..7.


EXAMPLE

For 2 teams there are 4 possible outcomes: [0, 6], [1, 4], [2, 2] and [3, 3], so a(2) = 4.


CROSSREFS

Cf. A047730, A064626, A007747.
Sequence in context: A153849 A251574 A010792 * A258662 A140701 A277748
Adjacent sequences: A064419 A064420 A064421 * A064423 A064424 A064425


KEYWORD

nonn,more


AUTHOR

Thomas Schulze (jazariel(AT)tiscalenet.it), Sep 30 2001


EXTENSIONS

a(6)a(7) from Lorand Lucz, Mar 09 2012


STATUS

approved



