|
| |
|
|
A063035
|
|
Number of integers containing a square factor less than or equal to 10^n.
|
|
2
| |
|
|
4, 39, 392, 3917, 39206, 392074, 3920709, 39207306, 392072876, 3920729058, 39207289720, 392072897726, 3920728981706, 39207289814053, 392072898145897, 3920728981459595
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
PROG
| (PARI) { default(realprecision, 50); for (n=1, 100, t=10^n - 1; a=10^n - sum(k=1, sqrt(t), moebius(k)*floor(t/k^2)); write("b063035.txt", n, " ", a) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Aug 16 2009]
|
|
|
CROSSREFS
| a(n) + A053462(n) = 10^n.
Sequence in context: A059945 A198853 A093851 * A123618 A199757 A046449
Adjacent sequences: A063032 A063033 A063034 * A063036 A063037 A063038
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 02 2001
|
|
|
EXTENSIONS
| More terms from Harry J. Smith (hjsmithh(AT)sbcglobal.net), Aug 16 2009
|
| |
|
|
