A133387 - OEIS

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A133387

Greatest prime p such that 6*n-p is prime.

3, 7, 13, 19, 23, 31, 37, 43, 47, 53, 61, 67, 73, 79, 83, 89, 97, 103, 109, 113, 113, 127, 131, 139, 139, 151, 157, 163, 167, 173, 181, 181, 193, 199, 199, 211, 211, 223, 229, 233, 241, 241, 251, 257, 263, 271, 277, 283, 283, 293, 293, 307, 313, 317, 317, 331 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	LINKS	`Nathaniel Johnston, Table of n, a(n) for n = 1..10000`
	MAPLE	`A133387 := proc(n) local p: p:=prevprime(6n): while(not isprime(6n-p))do p:=prevprime(p): od: return p: end: seq(A133387(n), n=1..100); # Nathaniel Johnston, Jun 25 2011`
	CROSSREFS	`Sequence in context: A034017 A034021 A038978 * A105399 A133261 A113911` `Adjacent sequences: A133384 A133385 A133386 * A133388 A133389 A133390`
	KEYWORD	`nonn,easy`
	AUTHOR	`Pierre CAMI (pierre-cami(AT)bbox.fr), Nov 23 2007`

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Last modified February 17 18:23 EST 2012. Contains 206063 sequences.