A067509
Powers of 5 with digit sum divisible by 5.
Original entry on oeis.org
5, 390625, 9765625, 37252902984619140625, 9094947017729282379150390625, 227373675443232059478759765625, 3552713678800500929355621337890625, 2220446049250313080847263336181640625
Offset: 1
-
filter:= proc(n) convert(convert(n,base,10),`+`) mod 5 = 0 end proc:
select(filter, [seq(5^n,n=1..100)]); # Robert Israel, Apr 21 2020
A067510
Powers of 6 with digit sum divisible by 6.
Original entry on oeis.org
6, 1296, 279936, 1679616, 10077696, 60466176, 13060694016, 78364164096, 2821109907456, 16926659444736, 101559956668416, 3656158440062976, 789730223053602816, 4738381338321616896, 28430288029929701376
Offset: 1
Cf.
A067499,
A067500,
A067501,
A067502,
A067503,
A067504,
A067505,
A067506,
A067507,
A067508,
A067509.
-
select(n -> convert(convert(n,base,10),`+`)::even, [seq(6^i, i=1..100)]); # Robert Israel, Apr 20 2020
A067511
Powers of 7 with digit sum divisible by 7.
Original entry on oeis.org
7, 2401, 117649, 40353607, 1977326743, 9387480337647754305649, 65712362363534280139543, 459986536544739960976801, 15286700631942576193765185769276826401, 5243338316756303634461458718861951455543, 12589255298531885026341962383987545444758743
Offset: 1
Cf.
A067499,
A067500,
A067501,
A067502,
A067503,
A067504,
A067505,
A067506,
A067507,
A067508,
A067509,
A067510.