OFFSET
1,1
MATHEMATICA
SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 7], {4, 2}]>0, 1, 0], {n, 2000}], {1, 0}][[;; , 1]] (* Harvey P. Dale, Nov 02 2024 *)
CROSSREFS
KEYWORD
nonn,base,changed
AUTHOR
STATUS
approved