A023738 Numbers with a single 4 in their base 5 expansion.

4, 9, 14, 19, 20, 21, 22, 23, 29, 34, 39, 44, 45, 46, 47, 48, 54, 59, 64, 69, 70, 71, 72, 73, 79, 84, 89, 94, 95, 96, 97, 98, 100, 101, 102, 103, 105, 106, 107, 108, 110, 111, 112, 113, 115, 116, 117, 118, 129, 134, 139, 144, 145, 146

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..5000

Mathematica

Select[ Range[ 150 ], (Count[ IntegerDigits[ #, 5 ], 4 ]==1)& ]

Crossrefs

Sequence in context: A100213 A337572 A043365 * A070799 A277548 A031474

Adjacent sequences: A023735 A023736 A023737 * A023739 A023740 A023741

Keyword

nonn,base,easy

Author

Olivier Gérard

Status

approved