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.

A213455 90*A002451(n).

Original entry on oeis.org

90, 1260, 13230, 126720, 1171170, 10663380, 96461910, 870123240, 7838973450, 70582218300, 635365793790, 5718795460560, 51471172410930, 463248604762020, 4169269655112870, 37523555745034680, 337712517101387610, 3039414715496790540, 27354740685808323150, 246192699157623741600, 2215734424360009007490
Offset: 0

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Author

N. J. A. Sloane, Jun 12 2012

Keywords

References

  • S. A. Joffe, Calculation of the first thirty-two Eulerian numbers from central differences of zero, Quart. J. Pure Appl. Math. 47 (1914), 103-126.
  • N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

Crossrefs

Cf. A002451. A diagonal of the triangle in A241171.

Formula

From Chai Wah Wu, Jan 30 2018: (Start)
a(n) = 14*a(n-1) - 49*a(n-2) + 36*a(n-3) for n > 2.
G.f.: 90/((1 - x)*(1 - 4*x)*(1 - 9*x)). (End)