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A124868 Natural numbers that are not the sum of 3 distinct primes. 8
1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 17 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

(Conjectured) Every number n > 17 is the sum of 3 distinct primes. a(n) is the complement of A124867(n) = {10, 12, 14, 15, 16, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, ...}, numbers that are the sum of 3 distinct primes.

A125688(a(n)) = 0. - Reinhard Zumkeller, Nov 30 2006

LINKS

Table of n, a(n) for n=1..12.

CROSSREFS

Cf. A124867 (numbers that are the sum of 3 distinct primes), A068307.

Sequence in context: A242417 A225657 A175772 * A165209 A072227 A122427

Adjacent sequences:  A124865 A124866 A124867 * A124869 A124870 A124871

KEYWORD

fini,full,nonn

AUTHOR

Alexander Adamchuk, Nov 11 2006

STATUS

approved

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Last modified April 14 01:17 EDT 2021. Contains 342941 sequences. (Running on oeis4.)