id:A034812 - OEIS Search Results

Search: id:A034812

Displaying 1-1 of 1 results found.

page 1

Concatenation of 'prevprime(n) and n and prevprime(n)' is a prime.

+0
1

5, 8, 9, 12, 14, 17, 19, 23, 25, 28, 31, 33, 38, 39, 41, 42, 47, 48, 51, 60, 61, 62, 63, 69, 71, 72, 75, 77, 78, 80, 81, 84, 85, 91, 102, 104, 105, 111, 124, 126, 149, 150, 167, 181, 182, 189, 192, 194, 215, 222, 227, 230, 233, 242, 243, 256, 271, 273, 283, 288, 308 (list; graph; listen)

	OFFSET	`0,1`
	EXAMPLE	`n=222 -> previous prime is 211, thus '211222211' is a prime.`
	CROSSREFS	`Cf. A034808-A034821.` `Adjacent sequences: A034809 A034810 A034811 this_sequence A034813 A034814 A034815` `Sequence in context: A101079 A066812 A100832 this_sequence A066467 A072833 A047616`
	KEYWORD	`nonn,base`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com), Oct 15 1998.`

page 1

Search completed in 0.002 seconds

Last modified October 13 02:37 EDT 2008. Contains 145008 sequences.

AT&T Labs Research