A004572 Expansion of sqrt(7) in base 5.

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

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• base
• cons

Links

• Matthew House, Table of n, a(n) for n = 1..10000
• Jason Kimberley, Index of expansions of sqrt(d) in base b

Crossrefs

Cf. A010465 (same in base 10).

Programs

Magma

d:= 7; m:=5; Prune(Reverse(IntegerToSequence(Isqrt(d*m^100), m))); // G. C. Greubel, Mar 25 2018

Mathematica

RealDigits[N[Sqrt@ 7, 120], 5] // First (* Michael De Vlieger, Aug 06 2015 *)

Extensions

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