OFFSET
1,1
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..5000
MATHEMATICA
Select[Range[1300], Mod[Length[Split[IntegerDigits[#, 3]]], 9]==7&] (* Harvey P. Dale, Jul 30 2024 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
STATUS
approved