A144162 Numbers with at least two digits in which all digits except the rightmost are 0 or 5 and the rightmost is neither 0 nor 5.

51, 52, 53, 54, 56, 57, 58, 59, 501, 502, 503, 504, 506, 507, 508, 509, 551, 552, 553, 554, 556, 557, 558, 559, 5001, 5002, 5003, 5004, 5006, 5007, 5008, 5009, 5051, 5052, 5053, 5054, 5056, 5057, 5058, 5059, 5501, 5502, 5503, 5504, 5506, 5507, 5508, 5509, 5551

Offset

1,1

Comments

These are called f-type numbers, cf. A163396.

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Index entries for sequences related to carryless arithmetic

Mathematica

Flatten[Table[10#+r, {r, {1, 2, 3, 4, 6, 7, 8, 9}}]&/@FromDigits/@(Join[{5}, #]&/@ Flatten[ Table[Tuples[{0, 5}, f], {f, 0, 3}], 1])] (* Harvey P. Dale, Oct 18 2020 *)

Crossrefs

Cf. A143712, A163396, A169984.

Sequence in context: A210183 A210086 A031959 * A169984 A042299 A321962

Adjacent sequences: A144159 A144160 A144161 * A144163 A144164 A144165

Keyword

nonn,base

Author

David Applegate, Marc LeBrun and N. J. A. Sloane, Aug 24 2010

Status

approved