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A110453 Floor[Product of all k-digit numbers starting from n where k is the number of digits in n divided by product of all k-digit numbers less than n]. 0

%I

%S 362880,362880,90720,10080,630,25,0,0,0

%N Floor[Product of all k-digit numbers starting from n where k is the number of digits in n divided by product of all k-digit numbers less than n].

%C That is, a(n) = Floor[ n*(n+1)...*(10^k-1)/R, where k is the number of digits in n and R = (n-1)(n-2)...(10^(k-1)+1}{10^(k-1))].

%C Comment from David Wasserman, Dec 01 2008: There is no room for the next term, which is

%C 257182031095525112107857249934597388918419224714455526533820998388496472\

%C 644482792132224051962512451185663850090463028434334174412800000000000000\

%C 0000000.

%e a(5) = 5*6*7*8*9/(4!)=630.

%K base,easy,nonn

%O 1,1

%A _Amarnath Murthy_, Aug 04 2005

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Last modified January 27 06:18 EST 2022. Contains 350601 sequences. (Running on oeis4.)