OFFSET
0,1
COMMENTS
LINKS
Chai Wah Wu, Table of n, a(n) for n = 0..89
FORMULA
EXAMPLE
a(0) = 9 = 3 * 3
a(1) = 999 = 27 * 37
a(2) = 99999 = 123 * 813
a(3) = 9999999 = 2151 * 4649
a(4) = 999969999 = 16667 * 59997
a(5) = 99999999999 = 194841 * 513239
a(6) = 9999998999999 = 2893921 * 3455519
a(7) = 999999999999999 = 11099889 * 90090991
a(8) = 99999999799999999 = 265412903 * 376771433
a(9) = 9999999997999999999 = 2441330309 * 4096127411
a(10) = 999999999999999999999 = 19845575559 * 50389065161
a(11) = 99999999999899999999999 = 345867517613 * 289128047323
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Chai Wah Wu, Oct 03 2019
STATUS
approved