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%I M4684 #26 Nov 08 2017 19:31:16
%S 1,10,20,120,440,3200,20460,116600,612700,3628800
%N n! in base n.
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H L. J. Upton, <a href="/A006993/a006993_1.pdf">Letter to N. J. A. Sloane with attachments, Oct. 1993</a>
%H R. G. Wilson v, <a href="/A006993/a006993.pdf">Letter to N. J. A. Sloane, n.d.</a>
%H <a href="/index/Fa#factorial">Index entries for sequences related to factorial numbers</a>
%p convert(n!,base,n);
%t Join[{1},Table[FromDigits[IntegerDigits[n!,n]],{n,2,10}]] (* _Harvey P. Dale_, Aug 21 2017 *)
%K nonn,base,fini,full
%O 1,2
%A _N. J. A. Sloane_, L. J. Upton
%E Next term has a non-decimal digit.