A037312 Numbers whose base-3 and base-7 expansions have the same digit sum.

1, 2, 15, 16, 17, 21, 22, 23, 35, 57, 58, 59, 63, 64, 65, 78, 79, 80, 99, 100, 101, 112, 113, 119, 133, 134, 150, 151, 152, 156, 157, 158, 204, 205, 206, 210, 211, 212, 224, 294, 295, 296, 348, 349, 351, 352, 353, 366, 367, 368, 372

Offset

1,2

Links

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

Mathematica

Select[Range[400], Total[IntegerDigits[#, 3]]==Total[IntegerDigits[ #, 7]]&] (* Harvey P. Dale, May 24 2012 *)

Crossrefs

Sequence in context: A102101 A322149 A163480 * A267711 A108472 A039771

Adjacent sequences: A037309 A037310 A037311 * A037313 A037314 A037315

Keyword

nonn,base

Author

Clark Kimberling

Status

approved