A043519 Numbers having three 7's in base 10.

777, 1777, 2777, 3777, 4777, 5777, 6777, 7077, 7177, 7277, 7377, 7477, 7577, 7677, 7707, 7717, 7727, 7737, 7747, 7757, 7767, 7770, 7771, 7772, 7773, 7774, 7775, 7776, 7778, 7779, 7787, 7797, 7877, 7977, 8777, 9777, 10777

Offset

1,1

Links

Daniel Starodubtsev, Table of n, a(n) for n = 1..10000

Mathematica

Select[Range[11000], DigitCount[#, 10, 7]==3&] (* Harvey P. Dale, Mar 25 2015 *)

Crossrefs

Subsequence of A011537.

Sequence in context: A177843 A202893 A204300 * A043384 A237162 A252529

Adjacent sequences: A043516 A043517 A043518 * A043520 A043521 A043522

Keyword

nonn,base

Author

Clark Kimberling

Status

approved