Search: id:A131387
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%I A131387
%S A131387 1,1,1,1,2,4,12,48,48,192,2880,2880,25920,552960,3265920,1935360,
%T A131387 116121600,278691840,9405849600,26754416640,94058496000,3210529996800,
%U A131387 869100503040000,423789959577600,927040536576000,135612787064832000
%N A131387 Product of the non-zero digital products of n for all the bases 1 to 
               n (a 'total digital-product factorial').
%F A131387 a(n)=product{1<=p<=n, dp_p(n)} where dp_p(n) = product of the non-zero 
               digits of n in base p.
%F A131387 Cf. A131385, A010786, A007954.
%Y A131387 Sequence in context: A131529 A165901 A074449 this_sequence A152453 A004527 
               A002871
%Y A131387 Adjacent sequences: A131384 A131385 A131386 this_sequence A131388 A131389 
               A131390
%K A131387 nonn
%O A131387 0,5
%A A131387 Hieronymus Fischer (Hieronymus.Fischer(AT)gmx.de), Jul 08 2007

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