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Positions of 5 in A274640.
8

%I #10 Sep 01 2016 21:36:39

%S 7,15,18,24,28,42,77,91,142,227,261,275,356,374,384,479,501,670,735,

%T 763,791,863,1050,1130,1164,1288,1492,1631,1648,1713,1838,2015,2034,

%U 2268,2413,2562,2611,2715,2767,3036,3148,3263,3319,3954,4046,4145,4541,4676

%N Positions of 5 in A274640.

%H Alois P. Heinz, <a href="/A275190/b275190.txt">Table of n, a(n) for n = 1..10075</a>

%H Alois P. Heinz, <a href="/A275190/a275190.jpg">Positions of first 1410 5's in plane of A274640</a>

%F A274640(a(n)) = 5.

%Y Cf. A274640, A275172, A275188, A275189, A275191, A275192, A275193, A275194.

%K nonn

%O 1,1

%A _Zak Seidov_, Jul 19 2016