id:A038136 - OEIS Search Results

Search: id:A038136

Displaying 1-1 of 1 results found.

page 1

Dihedral calculator primes: p, p upside down, p in a mirror, p upside-down-and-in-a-mirror are all primes.

+0
9

2, 11, 101, 181, 1181, 1811, 18181, 108881, 110881, 118081, 120121, 121021, 121151, 150151, 151051, 151121, 180181, 180811, 181081, 188011, 188801, 1008001, 1022201, 1028011, 1055501, 1058011, 1082801, 1085801, 1088081 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.` `C. K. Caldwell, The Prime Glossary, Dihedral Prime`
	EXAMPLE	`120121 is such a number because 120121, 121021 (upside down), 151051 (mirror) and 150151 are all prime. (This is the smallest one in which all four numbers are distinct.)`
	CROSSREFS	`See A134996 for another version. Cf. A048660, A048662.` `Sequence in context: A087988 A104076 A072382 this_sequence A048662 A090726 A036953` `Adjacent sequences: A038133 A038134 A038135 this_sequence A038137 A038138 A038139`
	KEYWORD	`nonn,base,nice`
	AUTHOR	`Mike Keith (domnei(AT)aol.com)`

page 1

Search completed in 0.002 seconds

Last modified July 6 17:22 EDT 2008. Contains 140988 sequences.

AT&T Labs Research