A004570 Expansion of sqrt(7) in base 3.

2, 1, 2, 2, 1, 0, 2, 2, 0, 2, 0, 2, 2, 2, 0, 1, 1, 1, 1, 2, 0, 1, 0, 0, 0, 2, 2, 2, 0, 1, 2, 1, 0, 1, 2, 0, 1, 2, 1, 2, 2, 0, 0, 0, 0, 0, 0, 2, 0, 1, 1, 1, 2, 1, 1, 0, 1, 0, 1, 2, 0, 2, 2, 1, 2, 2, 0, 2, 0, 0, 0, 2, 0, 1, 1, 1, 0, 0, 2, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 0, 1, 2, 2, 2, 2, 1, 2, 2, 1

Offset

1,1

Links

G. C. Greubel, Table of n, a(n) for n = 1..10000

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

Mathematica

RealDigits[Sqrt[7], 3, 120][[1]] (* Harvey P. Dale, May 02 2012 *)

Prog

(Magma) d:= 7; m:=3; Prune(Reverse(IntegerToSequence(Isqrt(d*m^100), m))); // G. C. Greubel, Mar 25 2018

Crossrefs

Cf. A010465.

Sequence in context: A127251 A063251 A060208 * A178064 A145363 A071429

Adjacent sequences: A004567 A004568 A004569 * A004571 A004572 A004573

Keyword

nonn,base,cons

Author

N. J. A. Sloane

Status

approved