%I #16 Apr 10 2019 22:29:13

%S 0,1,2,3,4,5,155133423353,1535554025003332541,1541322512150022100,

%T 14544222532144144105400055,15313352033401001032012412,

%U 144510301032554451200342301123415,145033105231511102401034455341005,152142233320210504134120425450055,1435322205115414041210434301130104431115

%N Numbers k such that k is the substring identical to the most significant digits of its base-6 representation.

%C Numbers k whose base-6 representation begins with the same digits as k itself.

%H Scott R. Shannon, <a href="/A307257/b307257.txt">Table of n, a(n) for n = 1..500</a>

%e 155133423353_10 = 155133423353145_6, which also begins with '155133423353'.

%o (PARI) isok(n) = my(vb=digits(n, 6), vd=digits(n)); vd == vector(#vd, k, vb[k]); \\ _Michel Marcus_, Apr 08 2019

%Y This is a subsequence of A038106.

%K nonn,base

%O 1,3

%A _Scott R. Shannon_, Apr 01 2019