OFFSET
3,1
LINKS
Alois P. Heinz, Table of n, a(n) for n = 3..180
EXAMPLE
a(3) = 3: [1,1,1], [2,2,2], [3,3,3].
a(6) = 2*C(6,2) = 30: [1,1,1,2,2,2], ..., [6,6,6,5,5,5].
CROSSREFS
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Aug 28 2013
STATUS
approved