A306476 - OEIS

A306476

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

10556208, 10578672, 10589904, 10612368, 10657296, 10690992, 10702224, 10747152, 10825776, 10859472, 10870704, 10881936, 10938096, 10949328, 10971792, 10983024, 11005488, 11039184, 11050416, 11095344, 11117808, 11196432, 11207664, 11252592, 11286288, 11319984

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OFFSET

1,1

COMMENTS

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.

LINKS

Table of n, a(n) for n=1..26.

CROSSREFS

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

Sequence in context: A234198 A186921 A185805 * A251640 A066870 A340110

Adjacent sequences: A306473 A306474 A306475 * A306477 A306478 A306479

KEYWORD

nonn

AUTHOR

Giovanni Resta, Feb 18 2019

STATUS

approved