A039033 Numbers whose base-7 representation has the same number of 0's and 4's.

1, 2, 3, 5, 6, 8, 9, 10, 12, 13, 15, 16, 17, 19, 20, 22, 23, 24, 26, 27, 28, 36, 37, 38, 40, 41, 43, 44, 45, 47, 48, 53, 57, 58, 59, 61, 62, 64, 65, 66, 68, 69, 71, 72, 73, 75, 76, 77, 85, 86, 87, 89, 90, 92, 93, 94, 96, 97, 102, 106, 107, 108, 110, 111, 113, 114, 115

Offset

1,2

Links

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

Mathematica

Select[Range[200], DigitCount[#, 7, 0]==DigitCount[#, 7, 4]&] (* Harvey P. Dale, Jul 31 2014 *)

Crossrefs

Cf. A007093.

Sequence in context: A032953 A270813 A247431 * A047333 A032796 A087057

Adjacent sequences: A039030 A039031 A039032 * A039034 A039035 A039036

Keyword

nonn,base,easy

Author

Olivier Gérard

Status

approved