OFFSET
0,2
COMMENTS
The fifth column is [1,6,60,600,6000,60000,...].
LINKS
FORMULA
a(n)= A067410(n+5, 5). a(n)= 7*12^(n-1), n>=1, a(0)=1.
G.f.: (1-5*x)/(1-12*x).
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Wolfdieter Lang, Jan 25 2002
STATUS
approved