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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A272687 First differences of A078482.

Original entry on oeis.org

1, 1, 4, 14, 50, 184, 694, 2670, 10440, 41374, 165830, 671084, 2738334, 11254362, 46547340, 193592830, 809165002, 3397135168, 14319385126, 60576862358, 257109077584, 1094541239294, 4672423779086, 19996407893908, 85778157486910, 368757697819570, 1588465839532628, 6855304750273902
Offset: 0

Views

Author

N. J. A. Sloane, May 24 2016

Keywords

Crossrefs

Cf. A078482, A272686 (second differences).

Programs

  • Mathematica
    Differences[CoefficientList[Series[(1-3 x+x^2-Sqrt[1-6 x+7 x^2-2 x^3+x^4])/(2 x),{x,0,40}],x]] (* Harvey P. Dale, Jun 08 2024 *)
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