%I #9 Sep 07 2014 08:22:08

%S 10,9,34,8,20,7,8,8,15,14,1,26,39,20,6,57,949

%N 7-adic valuation of A217410.

%C These are the values s for numbers of the form (3^r)*(7^s) in the main sequence.

%e A217410(1)=(3^37)*(7^10), so this sequence's first term is 10.

%Y Cf. A217410, A217411.

%K nonn,base,less

%O 1,1

%A _James G. Merickel_, Oct 02 2012