A080912 a(n) = first number that appears n times in A080900.
1, 523, 1277, 1277, 12694, 12694, 12692, 24154439, 186075352, 186074886
Offset: 1
Examples
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.
Extensions
One more term from Lambert Herrgesell (zero815(AT)googlemail.com), Mar 09 2007
a(9)-a(10) from Donovan Johnson, Sep 24 2009
Comments