OFFSET
1,1
FORMULA
For n>=4, a(n) = 2*10^(2n-4) - 11*10^(n-2) + 15 [From Max Alekseyev, Apr 25 2009]
CROSSREFS
KEYWORD
base,more,nonn
AUTHOR
Amarnath Murthy, Feb 25 2002
EXTENSIONS
3 more terms from Ray G. Opao, Dec 09 2004
Extended by Max Alekseyev, Apr 25 2009
STATUS
approved