id:A131102 - OEIS Search Results

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Prime numbers arising from A131101.

+0
2

2, 5, 7, 11, 23, 47, 37, 59, 41, 43, 47, 83, 107, 73, 83, 89, 97, 167, 179, 227, 139, 137, 151, 263, 151, 167, 157, 197, 347, 193, 359, 223, 383, 229, 241, 467, 479, 257, 293, 503, 281, 307, 283, 307, 317, 563, 313, 313, 587, 331, 349, 349, 367, 367, 419, 719 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`The Safe Primes (A005385) they are part of this sequence because they are the result of add A005384(n) (Sophie Germain primes) to its only prime factor (itself) + 1 = 2*A005384 + 1 .`
	FORMULA	`A131101(n) + prime factors of A131101(n) + 1 = a(n) ; a(n) is a prime number.`
	EXAMPLE	`a(8)=59 because 59 = A131101(8)+ prime factors of A131101(8) +1 = 29+ (29) +1 ; a(9)=41 becasue A131101(9)+ prime factors of A131101(8) + 1 = 30 +(2+3+5)+1.`
	CROSSREFS	`Cf. A131101; A005384; A005385.` `Sequence in context: A038884 A040122 A038955 this_sequence A039679 A088823 A007445` `Adjacent sequences: A131099 A131100 A131101 this_sequence A131103 A131104 A131105`
	KEYWORD	`easy,nonn`
	AUTHOR	`Tomas Xordan (xordan.tom(AT)gmail.com), Jun 14 2007`

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

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