|
Search: id:A049101
|
|
|
| A049101 |
|
Numbers n such that n divides (product of digits of n) * (sum of digits of n). |
|
+0
7
|
|
| 1, 2, 3, 4, 5, 6, 7, 8, 9, 15, 18, 24, 45, 48, 135, 144, 288, 378, 476, 756, 864, 1575, 39366, 69984, 139968
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
CROSSREFS
|
Cf. A038369, A049102, A049105, A049106.
Adjacent sequences: A049098 A049099 A049100 this_sequence A049102 A049103 A049104
Sequence in context: A032992 A069118 A032978 this_sequence A048406 A081433 A032581
|
|
KEYWORD
|
nonn,base,fini
|
|
AUTHOR
|
Olivier Gerard (olivier.gerard(AT)gmail.com)
|
|
EXTENSIONS
|
Next term if it exists is greater than 4 * 10^7 - Michel ten Voorde (seqfan(AT)tenvoorde.org)
Sequence is finite and bounded above by 10^84, since if 10^k<=n<10^(k+1) (product of digits of n)*(sum of digits of n)<=k*9^(k+2) which is less than 10^k for k >= 84 - Henry Bottomley (se16(AT)btinternet.com), May 18 2000
|
|
|
Search completed in 0.002 seconds
|
