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Powers of 8 with initial digit 1.
2

%I #10 Jun 10 2023 11:44:43

%S 1,16777216,134217728,1073741824,18014398509481984,144115188075855872,

%T 1152921504606846976,19342813113834066795298816,

%U 154742504910672534362390528,1237940039285380274899124224

%N Powers of 8 with initial digit 1.

%H Muniru A Asiru, <a href="/A067494/b067494.txt">Table of n, a(n) for n = 1..330</a>

%t Select[8^Range[0,30],IntegerDigits[#][[1]]==1&] (* _Harvey P. Dale_, Jun 10 2023 *)

%o (GAP) Filtered(List([0..40],n->8^n),i->ListOfDigits(i)[1]=1); # _Muniru A Asiru_, Oct 22 2018

%Y Cf. A067480, A067481, A067482, A067483, A067484, A067485, A067486, A067487, A067488, A067489, A067490, A067491, A067492, A067493.

%K base,easy,nonn

%O 1,2

%A _Amarnath Murthy_, Feb 09 2002

%E Offset 1 by _Michel Marcus_, Oct 19 2018