OFFSET
1,2
COMMENTS
Next term > 10^7. - Lambert Klasen (Lambert.Klasen(AT)gmx.net), Sep 26 2005
Next term > 26000000. - Lambert Herrgesell (zero815(AT)googlemail.com), Mar 09 2007
a(11) > 12*10^8. [Donovan Johnson, Sep 24 2009]
EXAMPLE
Terms 181 through 200 of A080900 are: 502, 507, 512, 510, 515, 513, 518, 523, 521, 526, 531, 529, 527, 525, 523, 521, 519, 517, 522, 527 and at term 195 we see the first duplicate, 523. So a(2) = 523.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Apr 02 2003
EXTENSIONS
One more term from Lambert Herrgesell (zero815(AT)googlemail.com), Mar 09 2007
a(9)-a(10) from Donovan Johnson, Sep 24 2009
STATUS
approved