A242721 Decimal expansion of the positive real root of 3*x^4 - x^3 - x^2 - 2, a constant related to quasi-isometric mappings.

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

Offset

1,4

References

Steven R. Finch, Mathematical Constants, Cambridge University Press, 2003, Section 7.4, p. 466.

Links

Table of n, a(n) for n=1..100.

Julian Gevirtz, Injectivity of quasi-isometric mappings of balls, Proc. Amer. Math. Soc. 85 (1982), 345-349.

Example

1.1143055508486900023...

Mathematica

RealDigits[Root[3*x^4 - x^3 - x^2 - 2, x, 2], 10, 100] // First

Crossrefs

Sequence in context: A204694 A304030 A338802 * A251610 A021703 A321209

Adjacent sequences: A242718 A242719 A242720 * A242722 A242723 A242724

Keyword

nonn,cons

Author

Jean-François Alcover, May 21 2014

Status

approved