A269724 - OEIS

%I #35 Mar 09 2016 04:09:19

%S 0,1,3,4,31,58130496,58130499,58130500,58130703,58183951,

%T 77810815551163745898450783,77810815551163745898451143,

%U 61819635578801174196008456415,61819635578801174196008574451,61819635578801174196008574771

%N Numbers which contain no 2's when written in bases 3 through 10.

%C There are 134 known terms. If a(135) exists, it must exceed 10^2300.

%H Nathan Fox, <a href="/A269724/b269724.txt">Table of n, a(n) for n = 1..134</a>

%o (PARI) isok(n) = {for (b=3, 10, d = digits(n, b); if (vecsearch(vecsort(d,,8),2), return (0));); 1;} \\ _Michel Marcus_, Mar 06 2016

%Y Cf. A216192, A216194.

%K nonn,base

%O 1,3

%A _Nathan Fox_, Mar 03 2016