login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A004569 Expansion of sqrt(7) in base 2. 2
1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 1, 0, 0, 1, 1, 0, 1, 1, 0, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 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

MAPLE

convert(evalf(sqrt(7), 100), binary, 100); # Wesley Ivan Hurt, Jan 28 2017

MATHEMATICA

RealDigits[Sqrt[7], 2, 120][[1]] (* Harvey P. Dale, Jan 18 2012 *)

PROG

(MAGMA) d:= 7; m:=2; Prune(Reverse(IntegerToSequence(Isqrt(d*m^100), m))); // G. C. Greubel, Mar 26 2018

CROSSREFS

Cf. A010465.

Sequence in context: A325897 A040053 A267513 * A100060 A328101 A147850

Adjacent sequences:  A004566 A004567 A004568 * A004570 A004571 A004572

KEYWORD

nonn,base,cons

AUTHOR

N. J. A. Sloane

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 16 20:13 EST 2019. Contains 329206 sequences. (Running on oeis4.)