OFFSET
1,1
REFERENCES
Journal of Recreational Mathematics, 29(2) 138 1998, Solution to Problem 2209 "Equidigital Representation"
EXAMPLE
13 is in the sequence because prime decompositions of 13 through 17, i.e. 13, 14=2*7, 15=3*5, 16=2^4, 17, use as many digits as their normal decimal representation.
CROSSREFS
KEYWORD
hard,more,base,nonn
AUTHOR
Lekraj Beedassy, Aug 31 2002
EXTENSIONS
a(9) corrected and a(11) from Donovan Johnson, Jul 30 2010
a(12) from Giovanni Resta, Aug 14 2013
STATUS
approved