A089019 - OEIS

A089019

First nontrivial x satisfying x^2 - 3*y^2 = d^2, where d=A072330(n).

%I #16 Mar 07 2020 07:58:35

%S 2,13,14,26,38,49,62,67,79,74,86,103,109,133,122,158,146,181,194,194,

%T 182,182,193,199,259,278,247,266,278,254,266,301,301,314,362,338,379,

%U 373,367,427,458,403,434,458,422,446,433,434,518,511,494,482,487,523

%N First nontrivial x satisfying x^2 - 3*y^2 = d^2, where d=A072330(n).

%H Jean-François Alcover, <a href="/A089019/b089019.txt">Table of n, a(n) for n = 1..999</a>

%F a(n) = A086909(n)/2.

%t Cases[Import["https://oeis.org/A086909/b086909.txt", "Table"], {_, _}][[All, 2]]/2 (* _Jean-François Alcover_, Mar 07 2020 *)

%Y For corresponding y see A089020.

%Y Cf. A072330, A072360, A086909, A089020, A096672, A096673, A096674.

%K nonn

%O 1,1

%A _Lekraj Beedassy_, Nov 04 2003

%E Extended by _Ray Chandler_, Jul 03 2004