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A170762 G.f.: (1+x)/(1-42*x). 50
1, 43, 1806, 75852, 3185784, 133802928, 5619722976, 236028364992, 9913191329664, 416354035845888, 17486869505527296, 734448519232146432, 30846837807750150144, 1295567187925506306048, 54413821892871264854016, 2285380519500593123868672 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..600

FORMULA

a(n)= Sum_{k, 0<=k<=n} A097805(n,k)*(-1)^(n-k)*43^k. [From Philippe Deléham, 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]

MATHEMATICA

CoefficientList[Series[(1+x)/(1-42x), {x, 0, 30}], x] (* or *) Join[{1}, NestList[42#&, 43, 30]] (* Harvey P. Dale, Mar 26 2012 *)

CROSSREFS

Sequence in context: A170628 A170676 A170724 * A218745 A009987 A076572

Adjacent sequences:  A170759 A170760 A170761 * A170763 A170764 A170765

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Dec 04 2009

STATUS

approved

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Last modified December 21 23:06 EST 2014. Contains 252326 sequences.