A037318 Numbers whose base-4 and base-7 expansions have the same digit sum.

1, 2, 3, 8, 9, 10, 11, 21, 22, 23, 28, 29, 30, 31, 35, 42, 43, 52, 53, 54, 55, 60, 61, 62, 70, 71, 77, 78, 79, 91, 100, 101, 102, 103, 108, 109, 110, 111, 112, 113, 114, 115, 120, 121, 122, 123, 148, 149, 150, 151, 156, 157, 158, 159

Offset

1,2

Links

Table of n, a(n) for n=1..54.

Mathematica

Select[Range[200], Total[IntegerDigits[#, 4]]==Total[IntegerDigits[#, 7]]&] (* Harvey P. Dale, Feb 17 2023 *)

Crossrefs

Sequence in context: A347397 A037462 A309125 * A253317 A277971 A080288

Adjacent sequences: A037315 A037316 A037317 * A037319 A037320 A037321

Keyword

nonn,base

Author

Clark Kimberling

Status

approved