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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Max Alekseyev showed that this sequence is finite; proof completed by several people to show that the list is complete.

LINKS

Table of n, a(n) for n=0..53.

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: A051038 A140332 A155182 * A108864 A055722 A028830

Adjacent sequences:  A096073 A096074 A096075 * A096077 A096078 A096079

KEYWORD

nonn,fini,full

AUTHOR

Franklin T. Adams-Watters, Jul 22 2004

STATUS

approved

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Last modified October 18 10:59 EDT 2019. Contains 328147 sequences. (Running on oeis4.)