

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.


2



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
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

1,1


COMMENTS

These are called ftype 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



