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Numbers k, with sigma(k) >= 3k and sigma(k) divisible by 3, that are not in A204830.
1

%I #6 Feb 18 2019 09:56:30

%S 10556208,10578672,10589904,10612368,10657296,10690992,10702224,

%T 10747152,10825776,10859472,10870704,10881936,10938096,10949328,

%U 10971792,10983024,11005488,11039184,11050416,11095344,11117808,11196432,11207664,11252592,11286288,11319984

%N Numbers k, with sigma(k) >= 3k and sigma(k) divisible by 3, that are not in A204830.

%C From an idea of _Amiram Eldar_. Analogous sequence to A171641. The divisors of the listed terms k cannot be arranged in three disjoint sets each of them adding to sigma(k)/3.

%Y Cf. A023197, A083207, A171641, A204830, A319186.

%K nonn

%O 1,1

%A _Giovanni Resta_, Feb 18 2019