A248674 Decimal expansion of the solution to the Lane-Emden equation for a sphere of polytropic index n = 4.

1, 7, 9, 7, 2, 2, 9, 9, 1, 4, 4

Offset

1,2

References

Steven R. Finch, Mathematical Constants II, Cambridge University Press, 2018, section 2.14, pp. 338-339.

Eric Poisson and Clifford M. Will, Gravity: Newtonian, Post-Newtonian, Relativistic, Cambridge University Press, 2014, p. 74.

Links

Table of n, a(n) for n=1..11.

Wikipedia, Lane-Emden equation.

Example

1.7972299144...

Crossrefs

Cf. A002194 (n=0), A000796 (n=1), A248672 (n=2), A248673 (n=3), A002194 (n=5).

Sequence in context: A019644 A100639 A194641 * A108743 A177271 A188157

Adjacent sequences: A248671 A248672 A248673 * A248675 A248676 A248677

Keyword

nonn,cons,more

Author

Arkadiusz Wesolowski, Oct 11 2014

Extensions

a(6) corrected and more terms added from Finch (2018) by Amiram Eldar, May 15 2021

Status

approved