OFFSET
0,3
EXAMPLE
a(7)=5 since 7 = (7*8^0) = (1*2^1)+(5*6^0) = (2*3^1)+(1*2^0) = (1*2^2)+(0*1^1)+(3*4^0) = (1*2^2)+(1*2^1)+(1*2^0), which are the numbers {7,15,21,103,111}.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
EXTENSIONS
More terms and additional comments from Larry Reeves (larryr(AT)acm.org), Mar 16 2001.
STATUS
approved