my @sequence = 1, 18, 4, 13 .. *;

##</code><code>##

my @sequence = 1, 18, 4, 13 .. *; ## dartboard

##</code><code>##

my @odds = ODDS; ## or LAZY_ODDS or LAZY_ODDS_FROM( 11 )
my @evens = EVENS;
my @board = DARTBOARD;