A394448 - OEIS

A394448

a(n) is the smallest nonnegative integer whose first n hexadecimal digits coincide with its first n decimal digits.

%I #8 Mar 26 2026 21:37:05

%S 0,1048576,1077248,1079552,1079648,1079653,1263628976128,

%T 1263629041664,1263629042688,1263629042720,1263629042727,

%U 1473629912658411520,1473629912658444288,1473629912658445312,1473629912658445376,1473629912658445381,1768641640191959317544960,1768641640191959317549056

%N a(n) is the smallest nonnegative integer whose first n hexadecimal digits coincide with its first n decimal digits.

%e 1079648 expressed as hexadecimal number is 107960_16. It is the smallest number for which the first 5 digits coincide, so a(5)=1079648.

%Y Cf. A227549, A305213.

%K nonn,base

%O 1,2

%A _Bert Dobbelaere_, Mar 20 2026