id:A024899 - OEIS Search Results

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Nonnegative integers n such that 6n+1 is prime.

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18

1, 2, 3, 5, 6, 7, 10, 11, 12, 13, 16, 17, 18, 21, 23, 25, 26, 27, 30, 32, 33, 35, 37, 38, 40, 45, 46, 47, 51, 52, 55, 56, 58, 61, 62, 63, 66, 68, 70, 72, 73, 76, 77, 81, 83, 87, 90, 91, 95, 96, 100, 101, 102, 103, 105, 107, 110, 112, 115, 118, 121, 122, 123, 125, 126, 128, 131, 135, 137 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`T. D. Noe, Table of n, a(n) for n=1..1000`
	FORMULA	`a(n) = A024892(n)/2 = (A034936(n)+1)/2. - Ray Chandler (rayjchandler(AT)sbcglobal.net), Dec 26 2003`
	MAPLE	`a := [ ]: for n from 0 to 400 do if isprime(6*n+1) then a := [ op(a), n ]; fi; od: A002476 := n->a[n];`
	MATHEMATICA	`a={}; Do[x=6*n+1; If[PrimeQ[x], AppendTo[a, n]], {n, 10^2}]; a - Vladimir Orlovsky (4vladimir(AT)gmail.com), Apr 29 2008`
	CROSSREFS	`A002476 gives primes, A091178 gives prime index.` `Complement of A046954 relative to A000027.` `Sequence in context: A089105 A110086 A107746 this_sequence A114518 A066940 A100118` `Adjacent sequences: A024896 A024897 A024898 this_sequence A024900 A024901 A024902`
	KEYWORD	`nonn,easy`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified July 25 02:12 EDT 2008. Contains 142294 sequences.

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