A037412 Positive numbers having the same set of digits in base 2 and base 7.

1, 49, 50, 56, 343, 344, 350, 351, 392, 393, 399, 2401, 2402, 2408, 2409, 2450, 2451, 2457, 2458, 2744, 2745, 2751, 2752, 2793, 2794, 2800, 16807, 16808, 16814, 16815, 16856, 16857, 16863, 16864, 17150, 17151, 17157, 17158

Offset: 1

Author

Clark Kimberling

Keywords

• nonn
• base

Links

• John Cerkan, Table of n, a(n) for n = 1..10000

Crossrefs

Subset of A033044.

Programs

PARI

isok(n) = Set(digits(n, 2)) == Set(digits(n, 7)); \\ John Cerkan, Jan 13 2017

Extensions

Name edited by John Cerkan, Jan 14 2017