A392576 Decimal expansion of (3 - e)/(6*(e - 2)).

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

Offset

0,2

Comments

This constant gives the linear growing rate of the variance of the distribution of the Betti numbers of M_{0,n}, i.e., the moduli space of the rational curves with n marked points.

Links

Table of n, a(n) for n=0..100.

Jinwon Choi and Young-Hoon Kiem, Asymptotic distribution of the Betti numbers of M_{0,n}, arXiv:2601.08369 [math.AG], 2026. See p. 6.

Example

0.06536853186288880239609214641330275472899639755...

Mathematica

Join[{0}, RealDigits[(3-E)/(6*(E-2)), 10, 100][[1]]]

Crossrefs

Cf. A001113, A153805.

Sequence in context: A019686 A143304 A021157 * A242494 A357107 A193211

Adjacent sequences: A392573 A392574 A392575 * A392577 A392578 A392579

Keyword

nonn,cons,easy

Author

Stefano Spezia, Jan 17 2026

Status

approved