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%I #7 Jan 11 2018 10:09:46
%S 1,2,4,7,11,16,22,29,37,46,55,65,76,88,101,115,130,146,163,181,199,
%T 218,238,259,281,304,328,353,379,406,433,461,490,520,551,583,616,650,
%U 685,721,757,794,832,871,911,952,994,1037,1081,1126,1171,1217,1264,1312,1361
%N Index of 5^n within sequence of numbers of form 5^i*6^j.
%H Charles R Greathouse IV, <a href="/A025707/b025707.txt">Table of n, a(n) for n = 0..10000</a>
%o (PARI) a(n)=my(N=1); n+1+sum(i=1, n, logint(N*=5, 6)); \\ _Charles R Greathouse IV_, Jan 11 2018
%o (PARI) first(n)=my(s, N=1/5); vector(n+1, i, s+=logint(N*=5, 6)+1) \\ _Charles R Greathouse IV_, Jan 11 2018
%K nonn,easy
%O 0,2
%A _David W. Wilson_
%E Offset corrected by _Charles R Greathouse IV_, Jan 11 2018
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