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A096076
Not the sum of two relatively prime composite numbers.
4
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 18, 20, 21, 22, 24, 26, 27, 28, 30, 32, 36, 38, 40, 42, 45, 48, 50, 54, 56, 60, 66, 70, 72, 78, 80, 84, 90, 96, 105, 108, 110, 120, 126, 132, 138, 140, 150, 180, 210
OFFSET
0,2
COMMENTS
Max Alekseyev showed that this sequence is finite; proof completed by several people to show that the list is complete.
EXAMPLE
13 is not in the set because 13 = 4 + 9. 15 = 6 + 9 does not prevent 15 from being in the set because gcd(6,9) = 3.
CROSSREFS
Sequence in context: A140332 A368955 A155182 * A108864 A334140 A338883
KEYWORD
nonn,fini,full
AUTHOR
STATUS
approved