cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A013790 a(n) = 9^(4*n + 1).

Original entry on oeis.org

9, 59049, 387420489, 2541865828329, 16677181699666569, 109418989131512359209, 717897987691852588770249, 4710128697246244834921603689, 30903154382632612361920641803529, 202755595904452569706561330872953769
Offset: 0

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From Philippe Deléham, Dec 07 2008: (Start)
a(n) = 6561*a(n-1); a(0)=9.
G.f.: 9/(1-6561*x).
a(n) = A013791(n)/81. (End)
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