A130008 - OEIS

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A130008

Prime numbers sandwiched between 1's.

1, 1, 1, 2, 1, 3, 1, 5, 1, 7, 1, 11, 1, 13, 1, 17, 1, 19, 1, 23, 1, 29, 1, 31 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	EXAMPLE	`Difference array begins:` `1 1 1 2 1 3 1 5 1 7 1 11` `.. 0 0 1 -1 2 -2 4 -4 6 -6 10` `..... 0 1 -2 3 -4 6 -8 10 -12 16` `........ 1 -3 5 -7 10 -14 18 -22 28`
	CROSSREFS	`Sequence in context: A131208 A168008 A119479 * A101809 A127203 A126132` `Adjacent sequences: A130005 A130006 A130007 * A130009 A130010 A130011`
	KEYWORD	`nonn`
	AUTHOR	`Paul Curtz (bpcrtz(AT)free.fr), Jun 15 2007`

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Last modified February 17 00:09 EST 2012. Contains 205978 sequences.