A166528 Decimal expansion of A060295^2.

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

Offset

35,1

Comments

Near-integer obtained by squaring Ramanujan's constant e^(Pi*sqrt(163)).

References

Henri Cohen, A Course in Computational Algebraic Number Theory, Springer-Verlag Berlin Heidelberg New-York, 1996 pp. 383.

Links

Table of n, a(n) for n=35..139.

Eric Weisstein's World of Mathematics, Almost Integer

Wikipedia, Heegner number

Math Overflow, Questions - Mark A. Thomas, Oct 02 2010

Example

exp(Pi*sqrt(163))^2 = 68925893036109279891085639286943768.00000000016373864420923460757232906257...

Mathematica

RealDigits[Exp[Pi Sqrt[163]]^2, 10, 120][[1]] (* Harvey P. Dale, May 21 2013 *)

Prog

(PARI) exp(2*Pi*sqrt(163)) \\ Charles R Greathouse IV, Nov 12 2014

Crossrefs

Cf. A166529, A166530, A166531, A166532.

Sequence in context: A182601 A261506 A021596 * A352324 A196751 A021149

Adjacent sequences: A166525 A166526 A166527 * A166529 A166530 A166531

Keyword

nonn,cons

Author

Mark A. Thomas, Oct 16 2009

Extensions

Edited by N. J. A. Sloane, Oct 18 2009

Example corrected by Harvey P. Dale, May 21 2013

Status

approved