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A170762
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G.f.: (1+x)/(1-42*x).
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50
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1, 43, 1806, 75852, 3185784, 133802928, 5619722976, 236028364992, 9913191329664, 416354035845888, 17486869505527296, 734448519232146432, 30846837807750150144, 1295567187925506306048, 54413821892871264854016, 2285380519500593123868672
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OFFSET
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0,2
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LINKS
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Vincenzo Librandi, Table of n, a(n) for n = 0..600
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FORMULA
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a(n)= Sum_{k, 0<=k<=n} A097805(n,k)*(-1)^(n-k)*43^k. [From Philippe DELEHAM, Dec 04 2009]
a(0) = 1; for n>0, a(n) = 43*42^(n-1). [From Vincenzo Librandi, Dec 05 2009]
a(0)=1, a{1)=43, a(n)=42*a(n-1). [From Harvey P. Dale, Mar 26 2012]
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MATHEMATICA
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CoefficientList[Series[(1+x)/(1-42x), {x, 0, 30}], x] (* or *) Join[{1}, NestList[42#&, 43, 30]] (* From Harvey P. Dale, Mar 26 2012 *)
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CROSSREFS
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Sequence in context: A170628 A170676 A170724 * A218745 A009987 A076572
Adjacent sequences: A170759 A170760 A170761 * A170763 A170764 A170765
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KEYWORD
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nonn,easy
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AUTHOR
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N. J. A. Sloane, Dec 04 2009
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STATUS
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approved
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