OFFSET
1,1
LINKS
R. Zumkeller, Table of n, a(n) for n = 1..250
R. Zumkeller, RepDigit Products
Eric Weisstein's World of Mathematics, Repeating Decimal
Eric Weisstein's World of Mathematics, Base
EXAMPLE
a(20) = 48 = 3*16: 66_7 = 11_2 * 22_7;
a(21) = 50 = 5*10: 55_9 = 11_4 * 22_4;
a(22) = 54 = 3*18: 66_8 = 11_2 * 33_5;
a(23) = 55 = 5*11: 55_10 = 11_4 * 11_10;
a(24) = 60 = 3*20: 66_9 = 11_2 * 22_9;
a(25) = 63 = 3*21: 111111_2 = 11_2 * 111_4;
a(26) = 66 = 3*22: 66_10 = 11_2 * 22_10;
a(27) = 70 = 5*14: 77_9 = 11_4 * 22_6;
a(28) = 77 = 7*11: 77_10 = 111_2 * 11_10;
a(29) = 80 = 4*20: 2222_3 = 11_3 * 22_9.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Reinhard Zumkeller, Mar 14 2008
STATUS
approved