A004576 Expansion of sqrt(7) in base 9.

2, 5, 7, 2, 6, 6, 8, 6, 4, 4, 6, 3, 0, 8, 6, 5, 3, 5, 1, 7, 8, 0, 0, 0, 6, 4, 5, 4, 1, 1, 6, 8, 5, 6, 6, 0, 6, 4, 3, 2, 5, 4, 4, 4, 7, 1, 8, 8, 5, 7, 3, 4, 1, 2, 7, 4, 2, 1, 7, 2, 6, 2, 1, 3, 1, 1, 8, 7, 1, 3, 7, 4, 4, 6, 5, 6, 6, 6, 3, 1, 8, 5, 0, 8, 7, 4, 7, 8, 4, 1, 6, 8, 8, 0, 5, 1, 6, 3, 2, 0, 0, 3, 7, 0, 1

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• base
• cons

Links

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

Crossrefs

Cf. A010465.

Programs

Magma

d:= 7; m:=9; Prune(Reverse(IntegerToSequence(Isqrt(d*m^100), m))); // G. C. Greubel, Mar 25 2018

Mathematica

RealDigits[Sqrt[7],9,105][[1]] (* Harvey P. Dale, Dec 07 2011 *)

Extensions

Corrected and extended by Harvey P. Dale, Dec 07 2011