Search: id:A053540
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%I A053540
%S A053540 1,18,243,2916,32805,354294,3720087,38263752,387420489,3874204890,38354628411,
%T A053540 376572715308,3671583974253,35586121596606,343151886824415,3294258113514384,
%U A053540 31501343210481297,300189270593998242,2851798070642983299,27017034353459841780
%N A053540 n*9^(n-1).
%C A053540 With a different offset, number of n-permutations of 10 objects: p, q, 
               r, s, u, v, w, z, x, y with repetition allowed, containing exactly 
               one u. - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Dec 28 2007
%H A053540 F. Ellermann, <a href="a001792.txt">Illustration of binomial transforms</
               a>
%p A053540 seq(seq(binomial(i,j)*9^(i-1), j =i-1), i=1..20);# - Zerinvary Lajos 
               (zerinvarylajos(AT)yahoo.com), Dec 28 2007
%o A053540 (Other) SAGE: [lucas_number2(n, 9, 0)*binomial(n,1)/9for n in xrange(1, 
               21)] # [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Mar 12 
               2009]
%Y A053540 Related to computing A023052.
%Y A053540 Cf. A001787, A053464 and A053469.
%Y A053540 Sequence in context: A016247 A021064 A080629 this_sequence A080601 A016186 
               A081203
%Y A053540 Adjacent sequences: A053537 A053538 A053539 this_sequence A053541 A053542 
               A053543
%K A053540 nonn
%O A053540 1,2
%A A053540 Barry E. Williams, Jan 15 2000
%E A053540 More terms from Larry Reeves (larryr(AT)acm.org), May 29 2001
%E A053540 Edited by N. J. A. Sloane (njas(AT)research.att.com) at the suggestion 
               of Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Sep 16 2007

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