A086654 - OEIS

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A086654

Smallest number a[n] > n such that a[n]! contains n! as a substring.

%I #2 Mar 31 2012 10:26:36

%S 1,5,4,9,20,14,40,28,434,10,1337,354,5370

%N Smallest number a[n] > n such that a[n]! contains n! as a substring.

%C What is a[13]?

%e a[5]=14 since 14!= 8717829_120_0.

%K base,hard,nonn

%O 0,2

%A _Erich Friedman_, Sep 11 2003