id:A115661 - OEIS Search Results

Search: id:A115661

Displaying 1-1 of 1 results found.

page 1

Numbers n which have the same number of distinct prime divisors as the reverse of n.

+0
2

1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 15, 16, 17, 21, 22, 23, 26, 28, 31, 32, 33, 36, 37, 39, 44, 45, 51, 54, 55, 56, 57, 58, 61, 62, 63, 65, 66, 68, 69, 71, 73, 75, 77, 79, 82, 85, 86, 88, 93, 96, 97, 99, 101, 107, 108, 111, 113, 115, 116, 117, 121, 122, 123, 125, 128 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`omega(16)=omega(61)=1.`
	CROSSREFS	`Cf. A001221, A115662.` `Sequence in context: A081306 A130073 A133812 this_sequence A002244 A037173 A091897` `Adjacent sequences: A115658 A115659 A115660 this_sequence A115662 A115663 A115664`
	KEYWORD	`base,nonn`
	AUTHOR	`Giovanni Resta (g.resta(AT)iit.cnr.it), Jan 29 2006`

page 1

Search completed in 0.002 seconds

Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

AT&T Labs Research