A004574 - OEIS

A004574

Expansion of sqrt(7) in base 7.

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

(list; constant; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

G. C. Greubel, Table of n, a(n) for n = 1..10000 (terms 1..2000 from Vincenzo Librandi)

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

MATHEMATICA

RealDigits[Sqrt[7], 7, 100][[1]] (* G. C. Greubel, Mar 25 2018 *)

PROG

(Magma) Prune(Reverse(IntegerToSequence(Isqrt(7*7^200), 7))); // Vincenzo Librandi, Apr 28 2017

CROSSREFS

Cf. A010465.