id:A101221 - OEIS Search Results

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Least k such that (10^k)*(P(n)#) - 1 is prime with P(i)= ith-prime P(i)#= ith-primorial.

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1, 0, 0, 1, 0, 0, 3, 2, 1, 1, 40, 1, 0, 10, 10, 10, 7, 17, 4, 11, 15, 10, 11, 0, 24, 8, 11, 2, 18, 2, 6, 4, 58, 3, 14, 15, 1, 3, 13, 16, 1, 37, 4, 4, 8, 11, 80, 2, 37, 58, 55, 34, 15, 59, 26, 1, 32, 42, 47, 56, 47, 4, 57, 62, 27, 0, 14, 0, 12, 47, 19, 16, 39, 9, 71, 13, 6, 6, 25, 10, 1, 1 (list; graph; listen)

	OFFSET	`1,7`
	EXAMPLE	`(10^1)*2 -1 = 19 prime so k(1)=1`
	CROSSREFS	`Sequence in context: A092742 A101479 A136170 this_sequence A137241 A016457 A077089` `Adjacent sequences: A101218 A101219 A101220 this_sequence A101222 A101223 A101224`
	KEYWORD	`nonn`
	AUTHOR	`Piere CAMI (pierrecami(AT)tele2.fr), Dec 15 2004`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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