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.

A021026 Decimal expansion of 1/22.

Original entry on oeis.org

0, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5
Offset: 0

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Crossrefs

Cf. A010710. [From Jaume Oliver Lafont, Mar 20 2009]

Programs

  • Mathematica
    Join[{0},RealDigits[1/22,10,120][[1]]] (* or *) CoefficientList[ Series[ x (4+5x)/(1-x^2),{x,0,120}],x] (* Harvey P. Dale, Apr 29 2011 *)

Formula

G.f.: x*(4+5*x)/(1-x^2). [From Jaume Oliver Lafont, Mar 20 2009]