id:A153092 - OEIS Search Results

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Least k(n) such that k(n)*6^n*(6^n-1)+j is prime with j= -1 or 1 or both

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1, 1, 1, 1, 3, 2, 3, 2, 20, 4, 5, 2, 9, 2, 27, 7, 12, 3, 3, 2, 3, 6, 6, 1, 18, 8, 2, 17, 2, 14, 55, 1, 18, 4, 59, 18, 30, 26, 32, 3, 14, 59, 42, 35, 40, 22, 7, 17, 26, 6, 28, 3, 15, 11, 6, 32, 30, 18, 14, 4, 85, 3, 1, 65, 13, 64, 7, 18, 40, 8, 68, 5, 5, 6, 107, 7, 88, 25, 6, 3, 1, 21, 8, 12, 9 (list; graph; listen)

	OFFSET	`1,5`
	COMMENT	`When n increases sum k(n) for i=1 to n / sum n for i=1 to n tends to log(6)/4.5`
	LINKS	`Pierre CAMI, Table of n, a(n) for n = 1..1000`
	EXAMPLE	`16^1(6^1-1)-1=29 prime as 31 so k(1)=1`
	CROSSREFS	`A152414, A152090, A152091, A152093, A152094, A152095` `Sequence in context: A165258 A092962 A112924 this_sequence A165601 A054263 A124874` `Adjacent sequences: A153089 A153090 A153091 this_sequence A153093 A153094 A153095`
	KEYWORD	`nonn`
	AUTHOR	`Pierre CAMI (pierre-cami(AT)orange.fr), Dec 18 2008`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

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