id:A083795 - OEIS Search Results

Search: id:A083795

Displaying 1-1 of 1 results found.

page 1

Numbers n such that n and n-1 have the same number of divisors. Numbers not included in A083794.

+0
3

3, 15, 22, 27, 34, 35, 39, 45, 58, 76, 86, 87, 94, 95, 99, 105, 117, 119, 123, 134, 136, 142, 143, 146, 148, 159, 172, 178, 190, 202, 203, 206, 214, 215, 218, 219, 231, 232, 243, 244, 245, 254, 286, 297, 299, 302, 303, 327, 333, 335, 345, 375, 376, 382, 388 (list; graph; listen)

	OFFSET	`1,1`
	MAPLE	with(numtheory): for n from 3 to 10^3 do if tau(n) = tau(n-1) then printf(`%d, `, n) fi: od:
	CROSSREFS	`Cf. A083794.` `Adjacent sequences: A083792 A083793 A083794 this_sequence A083796 A083797 A083798` `Sequence in context: A117801 A087674 A009057 this_sequence A083793 A083934 A072200`
	KEYWORD	`nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), May 07 2003`
	EXTENSIONS	`Corrected and extended by James A. Sellers (sellersj(AT)math.psu.edu), May 19, 2003`

page 1

Search completed in 0.002 seconds

Last modified October 11 13:47 EDT 2008. Contains 144830 sequences.

AT&T Labs Research