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%I #22 Jan 05 2022 10:56:20
%S 1,2,4,6,9,12,16,20,25,30,36,42,49,56,64,72,81,90,100,111,122,134,146,
%T 159,172,186,200,215,230,246,262,279,296,314,332,351,371,391,412,433,
%U 455,477,500,523,547,571,596,621,647,673,700,727,755,784,813,843,873,904,935
%N Index of 3^n within sequence of numbers of form 3^i*8^j (A025615).
%C Not same as A002620.
%C The first 19 positive terms are the same, then a(20) = 111 while A002620(21) = 110. - _Bernard Schott_, Dec 31 2021
%F A025615(a(n)) = 3^(n-1). - _Bernard Schott_, Dec 27 2021
%Y Cf. A002620, A003586, A025615, A025728 (similar for 8^n).
%K nonn
%O 1,2
%A _David W. Wilson_
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