|
Search: id:A116180
|
|
|
| A116180 |
|
Numbers n such that n concatenated with n+3 gives the product of two numbers which differ by 7. |
|
+0
13
|
|
| 7137, 7767, 47783068991048776635, 48797525371338932241, 55658688122404752991, 56753136503494828605, 85555875266989354735, 86911515887391841491, 95992713077544748491, 97428345698747155255
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
COMMENT
|
Also numbers n such that n concatenated with n-5 gives the product of two numbers which differ by 9.
Also numbers n such that n concatenated with n+9 gives the product of two numbers which differ by 5.
|
|
EXAMPLE
|
7767//7770 = 8810 * 8817, where // denotes concatenation.
7767//7762 = 8809 * 8818.
7767//7776 = 8811 * 8816.
|
|
CROSSREFS
|
Cf. A116167, A116179, A116181, A116133, A116311.
Cf. A116114, A116126, A116133, A116258.
Cf. A116207, A116187, A116174, A116351.
Sequence in context: A100539 A138077 A123292 this_sequence A063058 A028541 A064979
Adjacent sequences: A116177 A116178 A116179 this_sequence A116181 A116182 A116183
|
|
KEYWORD
|
nonn,base
|
|
AUTHOR
|
Giovanni Resta (g.resta(AT)iit.cnr.it), Feb 06 2006
|
|
EXTENSIONS
|
Edited by njas, Apr 12 2007
|
|
|
Search completed in 0.002 seconds
|
