A212224 Decimal expansion of phi^(2/Pi), the base of golden spiral

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

Offset

1,2

Comments

In polar coordinates (r,theta), a golden spiral equation is r~c^theta, where c is this constant, with phi being the golden ratio (A001622).

Links

Table of n, a(n) for n=1..105.

Wikipedia, Golden spiral

Example

1.3584562741829884352061806...

Mathematica

RealDigits[GoldenRatio^(2/Pi), 10, 120][[1]] (* Harvey P. Dale, Jul 16 2012 *)

Crossrefs

Cf. A001622, A212225.

Sequence in context: A175628 A119360 A021283 * A020864 A359286 A152304

Adjacent sequences: A212221 A212222 A212223 * A212225 A212226 A212227

Keyword

nonn,cons,easy

Author

Stanislav Sykora, May 06 2012

Status

approved