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.

A274210 Decimal expansion of the reciprocal of the constant in A274195.

Original entry on oeis.org

7, 7, 0, 0, 3, 5, 9, 6, 5, 7, 1, 2, 9, 2, 9, 1, 9, 8, 7, 9, 2, 2, 1, 4, 1, 6, 6, 1, 9, 6, 7, 9, 8, 9, 9, 3, 7, 0, 3, 2, 9, 4, 1, 7, 2, 3, 4, 0, 9, 3, 7, 2, 9, 6, 4, 2, 9, 4, 7, 0, 5, 2, 2, 0, 0, 8, 0, 8, 6, 3, 5, 9, 3, 8, 2, 6, 4, 6, 7, 0, 9, 4, 0, 8, 9, 0
Offset: 0

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Author

Clark Kimberling, Jun 16 2016

Keywords

Examples

			Limiting ratio = 0.770035965712929198792214166196...
		

Crossrefs

Programs

  • Mathematica
    z = 1600; g[n_, 0] = g[n, 0] = 1;
    g[n_, k_] := g[n, k] = If[k > n, 0, g[n - 1, k - 1] + g[n - 1, 3 k]];
    t = Table[g[n, k], {n, 0, z}, {k, 0, n}];
    w = Map[Total, t]; (*A274194*)
    u = N[w[[z]]/w[[z + 1]], 100]
    RealDigits[u][[1]] (*A274210*)