Search: id:A121050
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%I A121050
%S A121050 0,0,0,1,2,3,8,22,66,231,898,3841,17916,90407,490428,2844978,17570216,
%T A121050 115078238,796630973,5811215760,44551231394,358087648043,3010990488155,
%U A121050 26433752431414,241852566790861,2302304545944429,22768248457537812
%N A121050 Partial sums of floor(n!/e^n).
%F A121050 a(n) = SUM[i=1..n] floor(i!/exp(i)).
%e A121050 a(1) = floor[1!/exp(1)] = floor(0.367879441171) = 0.
%e A121050 a(2) = floor(0.638550007645) = 0.
%e A121050 a(3) = floor(0.937272417852) = 0.
%e A121050 a(4) = floor(1.37684775118) = 1.
%e A121050 a(5) = floor(2.18540139107) = 2.
%Y A121050 Cf. A000142, A055775.
%Y A121050 Sequence in context: A098119 A049959 A006545 this_sequence A089402 A127940 
               A006796
%Y A121050 Adjacent sequences: A121047 A121048 A121049 this_sequence A121051 A121052 
               A121053
%K A121050 easy,nonn
%O A121050 1,5
%A A121050 Jonathan Vos Post (jvospost3(AT)gmail.com), Aug 08 2006

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