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A089289 Squarefree kernel of floor(pi*10^n), pi=3.14.... 1
3, 31, 314, 1047, 31415, 314159, 785398, 31415926, 104719755, 3141592653, 31415926535, 314159265358, 3141592653589, 31415926535897, 314159265358979, 3141592653589793, 2243994752564138, 314159265358979323 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

a(n)=A007947(A011545(n)).

LINKS

Table of n, a(n) for n=0..17.

EXAMPLE

n=16: floor(pi*10^16) = 31415926535897932 =

2^2*7^2*2381*57493*1170899: a(16) = 2*7*2381*57493*1170899 =

2243994752564138.

CROSSREFS

Cf. A000796.

Sequence in context: A037785 A037589 A247351 * A011545 A011546 A276195

Adjacent sequences:  A089286 A089287 A089288 * A089290 A089291 A089292

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Oct 30 2003

STATUS

approved

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Last modified October 22 22:34 EDT 2019. Contains 328335 sequences. (Running on oeis4.)