A039041 - OEIS

A039041

Numbers whose base-7 representation has the same number of 2's and 4's.

0, 1, 3, 5, 6, 7, 8, 10, 12, 13, 18, 21, 22, 24, 26, 27, 30, 35, 36, 38, 40, 41, 42, 43, 45, 47, 48, 49, 50, 52, 54, 55, 56, 57, 59, 61, 62, 67, 70, 71, 73, 75, 76, 79, 84, 85, 87, 89, 90, 91, 92, 94, 96, 97, 102, 109, 123, 126, 127, 129, 131, 132, 137, 144, 147, 148

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

OFFSET

1,3

LINKS

Daniel Starodubtsev, Table of n, a(n) for n = 1..10000

MATHEMATICA

Select[Range[0, 200], DigitCount[#, 7, 2]==DigitCount[#, 7, 4]&] (* Harvey P. Dale, Dec 18 2011 *)

CROSSREFS

Cf. A007093.

Sequence in context: A080651 A047330 A093511 * A079253 A076054 A253201

Adjacent sequences: A039038 A039039 A039040 * A039042 A039043 A039044

KEYWORD

nonn,base,easy

AUTHOR

Olivier Gérard

STATUS

approved