A004558 Expansion of sqrt(5) in base 5.

2, 1, 0, 4, 2, 2, 3, 2, 4, 0, 1, 1, 3, 2, 4, 1, 0, 4, 0, 0, 1, 3, 4, 4, 1, 2, 3, 3, 0, 4, 1, 3, 0, 4, 2, 4, 2, 2, 2, 1, 2, 1, 3, 2, 1, 1, 3, 0, 1, 3, 1, 0, 3, 2, 1, 0, 0, 1, 0, 2, 2, 1, 4, 2, 3, 4, 4, 4, 3, 4, 3, 4, 2, 4, 2, 3, 4, 4, 1, 4, 4, 4, 2, 1, 1, 3, 0, 3, 2, 1, 4, 0, 1, 3, 0, 3, 2, 2, 1

Offset

1,1

Links

G. C. Greubel, Table of n, a(n) for n = 1..10000 (terms 1.2000 from Vincenzo Librandi)

Jason Kimberley, Index of expansions of sqrt(d) in base b

Mathematica

RealDigits[Sqrt[5], 5, 100][[1]] (* Vincenzo Librandi, Apr 29 2017 *)

Prog

(Magma) Prune(Reverse(IntegerToSequence(Isqrt(5*5^200), 5))); // Vincenzo Librandi, Apr 29 2017

Crossrefs

Cf. A002163.

Sequence in context: A276689 A091453 A062173 * A129699 A002349 A096794

Adjacent sequences: A004555 A004556 A004557 * A004559 A004560 A004561

Keyword

nonn,base,cons

Author

N. J. A. Sloane

Extensions

Updated by Alois P. Heinz at the suggestion of Kevin Ryde, Feb 19 2012

Status

approved