|
|
A116962
|
|
Floor of the base n Log of the number obtained concatenating n with itself n times.
|
|
0
|
|
|
4, 5, 6, 6, 7, 8, 8, 9, 19, 20, 21, 22, 23, 24, 25, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 56, 57, 58, 59, 60, 61, 62, 63, 63, 64, 65, 66, 67, 68, 69, 69, 70, 71, 72, 73, 74, 74, 75, 76, 77, 78
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
2,1
|
|
COMMENTS
|
a(100)=149, a(1000)=1333, a(10000)=12499.
|
|
LINKS
|
|
|
EXAMPLE
|
a(8)=8 since 88888888=8^8.802.
|
|
MATHEMATICA
|
Table[Floor@Log[n, FromDigits@Flatten@IntegerDigits@Array[n &, n]], {n, 2, 60}]
|
|
CROSSREFS
|
|
|
KEYWORD
|
base,nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|