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A004555 Expansion of sqrt(5) in base 2. 5
1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 1, 1, 0, 1, 1, 1, 0, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

2,1

LINKS

G. C. Greubel, Table of n, a(n) for n = 2..10000 (terms 2..1000 from Ivan Panchenko)

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

EXAMPLE

10.0011110001101110111100110111001011111110100101001111100000101011111001110...

MATHEMATICA

RealDigits[Sqrt[5], 2, 120][[1]] (* Harvey P. Dale, Apr 08 2015 *)

PROG

(MAGMA) d:= 5; m:=2; Prune(Reverse(IntegerToSequence(Isqrt(d*m^100), m))); // G. C. Greubel, Mar 31 2018

CROSSREFS

Sequence in context: A320106 A303561 A284680 * A200261 A288855 A138711

Adjacent sequences:  A004552 A004553 A004554 * A004556 A004557 A004558

KEYWORD

nonn,base,cons

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified July 17 18:47 EDT 2019. Contains 325109 sequences. (Running on oeis4.)