%I #9 Oct 29 2020 02:41:53
%S 1,6,10,18,37,67,77,81,90,124,156,160,185,205,259,289,330,376,429,452,
%T 492,501,513,600,609,618,622,674,683,710,743,796,821,945,1038,1060,
%U 1086,1214,1312,1316,1493,1556,1735,1764,1929,1938,2052,2216,2230,2259,2521
%N Numbers k such that A338338(k) and A338338(k+1) are coprime.
%H Rémy Sigrist, <a href="/A338450/b338450.txt">Table of n, a(n) for n = 1..10000</a>
%H Rémy Sigrist, <a href="/A338450/a338450.txt">C program for A338450</a>
%e gcd(A338338(6), A338338(7)) = gcd(9, 5) = 1, so 6 belongs to the sequence.
%e gcd(A338338(2), A338338(3)) = gcd(2, 4) = 2, so 2 does not belong to the sequence.
%o (C) See Links section.
%Y Cf. A280774, A338338.
%K nonn
%O 1,2
%A _Rémy Sigrist_, Oct 28 2020
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