A176521 - OEIS

%I #10 May 02 2021 14:33:07

%S 9,1,2,3,3,1,0,5,0,2,2,2,6,7,3,2,3,3,7,6,8,7,6,4,4,2,8,6,0,9,0,6,8,3,

%T 1,6,8,9,2,6,7,1,8,0,1,7,5,8,3,4,3,0,9,0,8,6,5,5,9,2,9,0,5,4,3,4,3,7,

%U 9,9,7,3,7,6,9,7,7,4,8,1,5,9,7,2,5,0,4,7,3,4,9,3,9,9,1,7,4,9,5,8,8,6,1,4,1

%N Decimal expansion of (18+3*sqrt(38))/4.

%C Continued fraction expansion of (18+3*sqrt(38))/4 is A010732 preceded by 9.

%H Daniel Starodubtsev, <a href="/A176521/b176521.txt">Table of n, a(n) for n = 1..10000</a>

%e (18+3*sqrt(38))/4 = 9.12331050222673233768...

%t RealDigits[(3*Sqrt[38] + 18)/4, 10, 100][[1]] (* _Amiram Eldar_, May 01 2021 *)

%o (PARI) (3*sqrt(38)+18)/4 \\ _Charles R Greathouse IV_, Apr 25 2016

%Y Cf. A010492 (decimal expansion of sqrt(38)), A010732 (repeat 8, 9).

%K cons,nonn

%O 1,1

%A _Klaus Brockhaus_, Apr 23 2010