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.

A191643 Incorrect version of A001861.

Original entry on oeis.org

2, 8, 22, 94, 454, 2430, 14214, 89918, 610182, 4412958
Offset: 1

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Author

Keywords

References

  • Carlier, Jacques; and Lucet, Corinne; A decomposition algorithm for network reliability evaluation. In First International Colloquium on Graphs and Optimization (GOI), 1992 (Grimentz). Discrete Appl. Math. 65 (1996), 141-156.

Crossrefs

Cf. A191644.

Programs

  • PARI
    a(n) = sum(j=1, k, stirling(k,j,2)*2^(j)) \\ Michel Marcus, Apr 25 2013

Formula

There is an explicit formula in the reference (see p. 152).