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A067509 Powers of 5 with digit sum divisible by 5. 4

%I #12 Apr 21 2020 13:52:17

%S 5,390625,9765625,37252902984619140625,9094947017729282379150390625,

%T 227373675443232059478759765625,3552713678800500929355621337890625,

%U 2220446049250313080847263336181640625

%N Powers of 5 with digit sum divisible by 5.

%H Robert Israel, <a href="/A067509/b067509.txt">Table of n, a(n) for n = 1..298</a>

%p filter:= proc(n) convert(convert(n,base,10),`+`) mod 5 = 0 end proc:

%p select(filter, [seq(5^n,n=1..100)]); # _Robert Israel_, Apr 21 2020

%Y Subsequence of A000351.

%Y Cf. A067499, A067500, A067501, A067502, A067503, A067504, A067505, A067506, A067507.

%K base,easy,nonn

%O 1,1

%A _Amarnath Murthy_, Feb 11 2002

%E More terms from _Sascha Kurz_, Mar 18 2002

%E Offset changed by _Robert Israel_, Apr 21 2020

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Last modified July 2 14:19 EDT 2024. Contains 373956 sequences. (Running on oeis4.)