id:A081990 - OEIS Search Results

Search: id:A081990

Displaying 1-1 of 1 results found.

page 1

A081990

Numbers n such that n+1 as well as (product of digits of n) + 1 both are squares.

+0
4

3, 8, 24, 35, 168, 528, 624, 783, 1443, 3843, 5183, 7568, 8835, 12543, 13224, 15128, 17423, 24335, 26243, 27224, 41615, 47523, 75624, 87615, 92415, 118335, 128163, 135423, 172224, 213443, 225624, 262143, 265224, 274575, 338723, 345743, 374543 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`168 belongs to this sequence as 168 + 1 =49 and 168 + 1= 169 both are squares.`
	CROSSREFS	`Cf. A081989.` `Adjacent sequences: A081987 A081988 A081989 this_sequence A081991 A081992 A081993` `Sequence in context: A047143 A065083 A037450 this_sequence A084920 A026556 A096001`
	KEYWORD	`base,easy,nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 04 2003`
	EXTENSIONS	`Corrected and extended by Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 06 2003`

page 1

Search completed in 0.002 seconds

Last modified October 11 09:12 EDT 2008. Contains 144832 sequences.

AT&T Labs Research