id:A096524 - OEIS Search Results

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Numbers n such that n.0.n+1 is prime, where '.' represents concatenation. Or, n such that 10^(k+1)*n + n + 1 is prime, where k is the number of digits in n.

+0
2

6, 8, 20, 36, 38, 42, 48, 50, 66, 72, 78, 96, 128, 140, 150, 152, 188, 212, 216, 218, 272, 296, 300, 318, 330, 336, 360, 366, 372, 386, 398, 408, 422, 446, 462, 482, 488, 492, 498, 542, 546, 552, 560, 570, 582, 608, 630, 638, 672, 678, 710, 716, 740, 756, 780 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`See A096525 for the actual primes.`
	CROSSREFS	`Sequence in context: A113806 A105775 A159469 this_sequence A083595 A064840 A084962` `Adjacent sequences: A096521 A096522 A096523 this_sequence A096525 A096526 A096527`
	KEYWORD	`base,easy,nonn`
	AUTHOR	`Jason Earls (zevi_35711(AT)yahoo.com), Jun 23 2004`

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

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