OFFSET
1,2
FORMULA
a(n) = a(n-1)^2 + 2*(n-1).
PROG
(PARI) a(n) = if (n==1, 1, a(n-1)^2 + 2*(n-1)) \\ Michel Marcus, Jun 29 2013
CROSSREFS
KEYWORD
nonn
AUTHOR
Rod Edwards (edwards(AT)math.uvic.ca), Feb 05 2006
STATUS
approved