|
| |
|
|
A111896
|
|
Number of numbers m <= n such that 6 equals the second digit after decimal point of square root of n in decimal representation.
|
|
11
| |
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,12
|
|
|
COMMENTS
| For n>1: if A111862(n)=6 then a(n)=a(n-1)+1 else a(n)=a(n-1).
a(n)/n --> 1/10.
|
|
|
REFERENCES
| G. Polya and G. Szego, Problems and Theorems in Analysis I (Springer 1924, reprinted 1972), Part Two, Chap. 4, Sect. 4, Problem 178.
|
|
|
EXAMPLE
| a(10) = 1, a(100) = 8, a(1000) = 98, a(10000) = 1000.
|
|
|
CROSSREFS
| Cf. A111890, A111891, A111892, A111893, A111894, A111895, A111897, A111898, A111899, A111856.
Sequence in context: A048766 A105516 A105518 * A105515 A105514 A194338
Adjacent sequences: A111893 A111894 A111895 * A111897 A111898 A111899
|
|
|
KEYWORD
| nonn,base
|
|
|
AUTHOR
| Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Aug 20 2005
|
| |
|
|
