OFFSET
1,2
EXAMPLE
a(3) = 729 = 9^3 = 91*a(2) + 1 where a(2) = 8=2^3 = 7*1 + 1.
CROSSREFS
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Mar 20 2002
EXTENSIONS
a(5) from Donovan Johnson, Mar 10 2010
a(6) from Sean A. Irvine, Mar 23 2024
STATUS
approved