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A067511
Powers of 7 with digit sum divisible by 7.
2
7, 2401, 117649, 40353607, 1977326743, 9387480337647754305649, 65712362363534280139543, 459986536544739960976801, 15286700631942576193765185769276826401, 5243338316756303634461458718861951455543, 12589255298531885026341962383987545444758743
OFFSET
1,1
LINKS
PROG
(PARI) lista(n)={my(L=List(), k=0); while(#L<n, if(sumdigits(7^k)%7==0, listput(L, 7^k)); k++); Vec(L)} \\ Andrew Howroyd, Sep 17 2024
KEYWORD
base,easy,nonn
AUTHOR
Amarnath Murthy, Feb 11 2002
EXTENSIONS
More terms from Sascha Kurz, Mar 18 2002
Offset changed and a(10) onwards from Andrew Howroyd, Sep 17 2024
STATUS
approved