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A017109 a(n) = (8*n+3)^9. 1
19683, 2357947691, 322687697779, 7625597484987, 78815638671875, 502592611936843, 2334165173090451, 8662995818654939, 27206534396294947, 75084686279296875, 186940255267540403, 427929800129788411 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
LINKS
Index entries for linear recurrences with constant coefficients, signature (10, -45, 120, -210, 252, -210, 120, -45, 10, -1).
FORMULA
a(0)=19683, a(1)=2357947691, a(2)=322687697779, a(3)=7625597484987, a(4)=78815638671875, a(5)=502592611936843, a(6)=2334165173090451, a(7)=8662995818654939, a(8)=27206534396294947, a(9)=75084686279296875; for n>9, a(n)=10*a(n-1)-45*a(n-2)+120*a(n-3)-210*a(n-4)+252*a(n-5)- 210*a(n-6)+ 120*a(n-7)-45*a(n-8)+10*a(n-9)-a(n-10). - Harvey P. Dale, Apr 16 2015
MATHEMATICA
(Range[0, 20]+3)^9 (* or *) LinearRecurrence[{10, -45, 120, -210, 252, -210, 120, -45, 10, -1}, {19683, 2357947691, 322687697779, 7625597484987, 78815638671875, 502592611936843, 2334165173090451, 8662995818654939, 27206534396294947, 75084686279296875}, 20] (* Harvey P. Dale, Apr 16 2015 *)
PROG
(Magma) [(8*n+3)^9: n in [0..30]]; // Vincenzo Librandi, Jul 12 2011
CROSSREFS
Sequence in context: A016893 A016953 A017025 * A017205 A017313 A017433
KEYWORD
nonn,easy
AUTHOR
STATUS
approved

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Last modified March 28 16:58 EDT 2024. Contains 371254 sequences. (Running on oeis4.)