|
|
A039940
|
|
Smallest k for which k, 2k, ... nk all contain the digit 9.
|
|
9
|
|
|
9, 49, 97, 98, 98, 99, 99, 99, 99, 99, 99, 499, 992, 993, 993, 994, 994, 994, 995, 995, 995, 995, 996, 996, 996, 996, 996, 997, 997, 997, 997, 997, 997, 997, 997, 997, 997, 998, 998, 998, 998, 998, 998, 998, 998, 998, 998, 998, 998, 998, 998, 998, 998, 998
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
LINKS
|
Giovanni Resta, Table of n, a(n) for n = 1..10000
|
|
EXAMPLE
|
a(11)=99 since 99, 198, 297, 396, 495, 594, 693, 792, 891, 990, and 1089 all contain a 9.
|
|
CROSSREFS
|
Cf. A039932, A039933, A039934, A039935, A039936, A039937, A039938, A039939.
Sequence in context: A110873 A167716 A087352 * A012111 A138998 A339125
Adjacent sequences: A039937 A039938 A039939 * A039941 A039942 A039943
|
|
KEYWORD
|
base,nonn
|
|
AUTHOR
|
Erich Friedman
|
|
EXTENSIONS
|
More terms from Patrick De Geest, Oct 15 1999
|
|
STATUS
|
approved
|
|
|
|