id:A075658 - OEIS Search Results

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Sum of prime divisors (A008472) is composite.

+0
2

14, 15, 21, 26, 28, 30, 33, 35, 38, 39, 42, 45, 46, 51, 52, 55, 56, 57, 60, 62, 63, 65, 66, 69, 70, 74, 75, 76, 77, 78, 84, 85, 86, 87, 90, 91, 92, 93, 94, 95, 98, 99, 102, 104, 105, 106, 110, 111, 112, 114, 115, 117, 119, 120, 122, 123, 124, 126, 129, 130, 132, 133 (list; graph; listen)

	OFFSET	`0,1`
	MAPLE	`A075658 := proc(n) local i, j, t1, t; t := NULL; for i from 2 to n do t1 := 0; for j from 1 to i do if i mod ithprime(j) = 0 then t1 := t1+ithprime(j); fi; od; if not(isprime(t1)) then t := t, i; fi; od; t; end;`
	CROSSREFS	`Sequence in context: A130687 A136012 A038456 this_sequence A047821 A085816 A090066` `Adjacent sequences: A075655 A075656 A075657 this_sequence A075659 A075660 A075661`
	KEYWORD	`nonn`
	AUTHOR	`Floor van Lamoen (fvlamoen(AT)hotmail.com), Sep 23 2002 and Oct 02 2002`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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