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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A351806 Denominator of zeta({6}_n)/Pi^(6*n).

Original entry on oeis.org

1, 945, 212837625, 64965492466875, 432684797065192546875, 1347828286825972065254765625, 197885500589205605585596463448046875, 18132629348577543860598956218936672646484375, 3673787208165374996876652878250276546299488037109375
Offset: 0

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Author

Roudy El Haddad, Feb 19 2022

Keywords

Comments

({6}_n) is standard notation for multiple zeta values. It represents (6, ..., 6) where the multiplicity of 6 is n.

Crossrefs

Cf. A351864 (numerators).
Cf. A002432 (denominators of zeta(2*n)/Pi^(2*n)).
Cf. A013664 (zeta(6)).
Cf. A103345.

Programs

  • Mathematica
    a[n_] := Denominator[6*2^(6*n)/(6*n + 3)!]; Array[a, 9, 0] (* Amiram Eldar, Feb 19 2022 *)
  • PARI
    a(n) = denominator(6*2^(6*n)/(6*n + 3)!); \\ Michel Marcus, Feb 22 2022

Formula

a(n) = denominator(6*2^(6*n)/(6*n + 3)!).
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