Search: id:A104470
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%I A104470
%S A104470 1,1,1,9,44,270,1938,15764,143776,1453302,16128420,194980478,2550746400,
%T A104470 35904118874,541097840528,8693290587030,148324680742912,
%U A104470 2678504175897990,51039398650102776,1023458322628129882
%N A104470 Tribonacci-equivalent of mousetrap sequence (A002467).
%C A104470 The mousetrap sequence (A002467) can be defined in a Fibonacci-like way 
               as: a(0) = a(1) = 1; for n>1 a(n) = n*(a(n-1)+a(n-2)). The current 
               sequence is thus the tribonacci-equivalent of that.
%F A104470 a(0) = a(1) = a(2) = 1; for n>2 a(n) = n*(a(n-1)+a(n-2)+a(n-3)).
%Y A104470 Cf. A002467.
%Y A104470 Sequence in context: A034558 A144109 A099867 this_sequence A084016 A125679 
               A037207
%Y A104470 Adjacent sequences: A104467 A104468 A104469 this_sequence A104471 A104472 
               A104473
%K A104470 easy,nonn
%O A104470 0,4
%A A104470 Jonathan Vos Post (jvospost3(AT)gmail.com), Mar 09 2005

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