|
| |
|
|
A141492
|
|
The floor of 10^n divided by difference between the 10^n-th root of 10^n and 1.
|
|
0
| |
|
|
3, 21, 144, 1085, 8685, 72381, 620420, 5428680, 48254941, 434294481, 3948131653, 36191206824, 334072678386, 3102103442165, 28952965460216, 271434051189531, 2554673422960304, 24127471216847323, 228576043106974645
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
COMMENTS
| Conjecture: This sequence converges to the number of primes < 10^n or Pi(10^n).
|
|
|
FORMULA
| 10^n/((10^n)^(1/10^n) - 1).
|
|
|
PROG
| (PARI) g(n) = for(x=1, n, y=1/((10^x)^(1/10^x)-1); print1(floor(y)", "))
|
|
|
CROSSREFS
| Sequence in context: A137969 A054419 A033888 * A173350 A169634 A088088
Adjacent sequences: A141489 A141490 A141491 * A141493 A141494 A141495
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Cino Hilliard (hillcino368(AT)hotmail.com), Aug 10 2008
|
| |
|
|