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Search: id:A081105
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| A081105 |
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5th Binomial transform of (1,1,0,0,0,0,.....). |
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+0
5
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| 1, 6, 35, 200, 1125, 6250, 34375, 187500, 1015625, 5468750, 29296875, 156250000, 830078125, 4394531250, 23193359375, 122070312500, 640869140625, 3356933593750, 17547607421875, 91552734375000, 476837158203125
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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Main diagonal of array defined by m(1,j)=j; m(i,1)=i and m(i,j)=m(i-1,j)+4*m(i-1,j-1) - Benoit Cloitre (benoit7848c(AT)orange.fr), Jun 13 2003
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FORMULA
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a(n) =10*a(n-1)-25*a(n-2), a(0)=1, a(1)=6. a(n)=(n+5)*5^(n-1) G.f.: (1-4x)/(1-5x)^2
a(n) = A079027(n), n>0. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 18 2008]
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CROSSREFS
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Cf. A001792, A006234, A092288.
Cf. A006234.
Sequence in context: A026934 A131435 A079027 this_sequence A161727 A121838 A001109
Adjacent sequences: A081102 A081103 A081104 this_sequence A081106 A081107 A081108
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KEYWORD
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easy,nonn
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AUTHOR
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Paul Barry (pbarry(AT)wit.ie), Mar 07 2003
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