A039459 - OEIS

A039459

Numbers whose base-11 representation has the same nonzero number of 2's and 5's.

27, 57, 148, 178, 247, 258, 280, 291, 297, 298, 300, 301, 303, 304, 305, 306, 307, 313, 324, 335, 346, 357, 390, 420, 511, 541, 607, 618, 627, 628, 630, 631, 633, 634, 635, 636, 637, 640, 651, 673, 684, 695, 706, 717, 753, 783, 874, 904, 995, 1025

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

OFFSET

1,1

LINKS

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

MATHEMATICA

Select[Range[1100], DigitCount[#, 11, 2]==DigitCount[#, 11, 5]>0&] (* Harvey P. Dale, Jan 21 2026 *)

CROSSREFS

Sequence in context: A053180 A080864 A260440 * A235164 A157500 A180574

Adjacent sequences: A039456 A039457 A039458 * A039460 A039461 A039462

KEYWORD

nonn,base,easy

AUTHOR

Olivier Gérard

STATUS

approved