OFFSET
1,1
COMMENTS
A hoax number is a composite number whose sum of digits is equal to the sum of the digits of its distinct prime factors.
LINKS
Giovanni Resta, Hoax numbers
Eric Weisstein's World of Mathematics, Hoax Number
EXAMPLE
For n = 1, a(1) = 22 because 22 = 11*2 and the sum of the digits (SOD) in both sides is 4 but 23 is not composite.
For n = 2, a(2) = 84 because 84 = 2^2*3*7, SOD = 12; 85 = 5*17, SOD = 13 but 86 = 2*43 and SOD = 14 <> 9.
CROSSREFS
KEYWORD
nonn,hard,more,base
AUTHOR
Carlos Rivera, Jan 15 2014
EXTENSIONS
a(6)-a(8) from Giovanni Resta, Jan 15 2014
STATUS
approved