OFFSET
1,1
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
MATHEMATICA
Flatten[Position[Partition[Boole[MemberQ[Partition[IntegerDigits[#], 2, 1], {4, 9}]]&/@Range[3500], 2, 1], {1, 0}]] (* Harvey P. Dale, Dec 21 2014 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
STATUS
approved