A039037 Numbers whose base-7 representation has the same number of 1's and 4's.

0, 2, 3, 5, 6, 11, 14, 16, 17, 19, 20, 21, 23, 24, 26, 27, 29, 35, 37, 38, 40, 41, 42, 44, 45, 47, 48, 53, 67, 74, 77, 79, 80, 82, 83, 88, 95, 98, 100, 101, 103, 104, 109, 112, 114, 115, 117, 118, 119, 121, 122, 124, 125, 127, 133, 135, 136, 138, 139, 140, 142

Offset

1,2

Links

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

Mathematica

Select[Range[0, 200], DigitCount[#, 7, 1]==DigitCount[#, 7, 4]&] (* Harvey P. Dale, Aug 13 2019 *)

Crossrefs

Cf. A007093.

Sequence in context: A350230 A104012 A164830 * A050049 A132581 A238542

Adjacent sequences: A039034 A039035 A039036 * A039038 A039039 A039040

Keyword

nonn,base,easy

Author

Olivier Gérard

Status

approved