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%I #20 Oct 21 2021 07:22:44
%S 1,2,4,8,47,7,52,27,17,60,1374,26,1385,59,46,137,3738,98,3755,204,83,
%T 1399,6680,136,320,1398,176,224,6703,345,84626,252,1447,3775,375,203,
%U 84657,3774,1446,502,89480,410,89521,1480,319,6733,91832,542,452,1024,3847,1618,91879,690,1524,501,3846,6732,173092,1074,173151,84695,645,807,1579,1735,192882
%N Index of first occurrence of n in A307730.
%C a(n) is the least k such that A307730(k) = n.
%H Rémy Sigrist, <a href="/A348246/b348246.txt">Table of n, a(n) for n = 1..10000</a>
%H Rémy Sigrist, <a href="/A348246/a348246.txt">C program for A348246</a>
%F A348409(n) - a(n) >= n - 1.
%e For n = 6:
%e - sequence A307730 starts: 1, 2, 2, 3, 3, 3, 6, 4, 4, 4, 4, 6, 6, 6, 6, 6,
%e - the first occurrence of 6 appears at position 7,
%e - so a(6) = 7.
%o (C) See Links section.
%Y Cf. A307720, A307730, A307630, A348409.
%Y Records: A348252, A348253.
%K nonn
%O 1,2
%A _Rémy Sigrist_ and _N. J. A. Sloane_, Oct 17 2021
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