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%I #17 Sep 08 2022 08:44:33
%S 1,2,6,2,0,3,4,5,4,5,2,1,1,2,3,2,6,1,0,6,1,3,4,2,1,0,1,2,0,1,6,1,6,6,
%T 2,4,0,5,0,4,0,0,4,2,5,1,1,2,6,0,5,2,1,6,0,2,2,6,6,1,5,6,3,5,2,2,0,2,
%U 6,0,5,6,5,1,5,5,2,2,4,3,6,2,0,6,4,0,5,5,1,4,4,5,1,5,2,0,0,4,1
%N Expansion of sqrt(2) in base 7.
%H G. C. Greubel, <a href="/A004544/b004544.txt">Table of n, a(n) for n = 1..10000</a>
%H Jason Kimberley, <a href="/wiki/User:Jason_Kimberley/sqrt_base">Index of expansions of sqrt(d) in base b</a>
%t RealDigits[Sqrt[2], 7, 100] [[1]] (* _Vincenzo Librandi_, Jan 23 2016 *)
%o (Magma) Prune(Reverse(IntegerToSequence(Isqrt(2*7^400), 7))); // _Vincenzo Librandi_, Jan 23 2016
%K nonn,base,cons
%O 1,2
%A _N. J. A. Sloane_
%E a(73) onwards corrected by _Sean A. Irvine_, Jan 22 2016
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