A379534 Decimal expansion of (9*sqrt(65) - 55)/320.

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

Offset

-1,1

Comments

Lower bound to the 9th Heilbronn triangle constant.

References

Steven R. Finch, Mathematical Constants, Encyclopedia of Mathematics and its Applications, vol. 94, Cambridge University Press, 2003, Section 8.16, p. 527.

Links

Table of n, a(n) for n=-1..98.

Francesc Comellas and J. Luis A. Yebra, New lower bounds for Heilbronn numbers, Elec. J. Combin. 9 (2002) R6. See pp. 6, 8.

Example

0.054875999170896708972810997102293563063154896095241...

Mathematica

RealDigits[(9Sqrt[65]-55)/320, 10, 100][[1]]

Crossrefs

Cf. A010517, A248866, A343851, A379533.

Sequence in context: A065015 A334401 A295162 * A002340 A335846 A023845

Adjacent sequences: A379531 A379532 A379533 * A379535 A379536 A379537

Keyword

nonn,cons,easy

Author

Stefano Spezia, Dec 24 2024

Status

approved