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A039405 Numbers n such that representation in base 10 has same nonzero number of 1's and 5's. 0
15, 51, 105, 125, 135, 145, 150, 152, 153, 154, 156, 157, 158, 159, 165, 175, 185, 195, 215, 251, 315, 351, 415, 451, 501, 510, 512, 513, 514, 516, 517, 518, 519, 521, 531, 541, 561, 571, 581, 591, 615, 651, 715, 751, 815, 851, 915, 951, 1005, 1025 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..50.

MATHEMATICA

Select[Range[1100], DigitCount[#, 10, 1]==DigitCount[#, 10, 5]>0&] (* Harvey P. Dale, Nov 26 2020 *)

CROSSREFS

Sequence in context: A002602 A098831 A265039 * A043228 A044008 A201054

Adjacent sequences:  A039402 A039403 A039404 * A039406 A039407 A039408

KEYWORD

nonn,base,easy

AUTHOR

Olivier Gérard

STATUS

approved

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Last modified March 4 01:30 EST 2021. Contains 341773 sequences. (Running on oeis4.)