A131566 Decimal expansion of (e*Pi*phi)^2.

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

Offset

3,2

Comments

phi = (5^(1/2) + 1)/2 = (1 + sqrt(5))/2.

Links

Harry J. Smith, Table of n, a(n) for n = 3..20000

Example

190.925523334...

Mathematica

phi=(5^(1/2)+1)/2; RealDigits[N[(Pi*E*phi)^2, 6! ]][[1]] (* Vladimir Joseph Stephan Orlovsky, Jun 18 2009 *)
RealDigits[(E*Pi*GoldenRatio)^2, 10, 120][[1]] (* Harvey P. Dale, May 01 2017 *)

Prog

(PARI) { default(realprecision, 20080); phi = (1 + sqrt(5))/2; x=(exp(1)*Pi*phi)^2/100; for (n=3, 20000, d=floor(x); x=(x-d)*10; write("b131566.txt", n, " ", d)); } \\ Harry J. Smith, Apr 27 2009

Crossrefs

Cf. A001113, A000796, A001622, A019609, A094886, A094885.

Sequence in context: A371649 A278144 A198220 * A264156 A160576 A104756

Adjacent sequences: A131563 A131564 A131565 * A131567 A131568 A131569

Keyword

cons,nonn

Author

Omar E. Pol, Aug 27 2007

Extensions

More terms from Harry J. Smith, Apr 26 2009

Fixed my PARI program, had -n Harry J. Smith, May 19 2009

Status

approved