A094875 a(n)=1 if floor(Pi*10^n) is prime, otherwise a(n)=0.

1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0

Offset

0,1

Links

Table of n, a(n) for n=0..99.

Example

a(0)=1 because 3 is prime,
a(2)=0 because 314 is divided by 2
a(5)=1 because 314159 is prime
a(13)=0 because 31415926535897 is divided by 163

Prog

(PARI) \p 120 a=vector(100); v=1; for(i=1, 100, a[i]=isprime(floor(Pi*v)); v=v*10)

Crossrefs

Cf. A089281, A000796, A010051.

Sequence in context: A179771 A194677 A194667 * A359456 A012245 A256436

Adjacent sequences: A094872 A094873 A094874 * A094876 A094877 A094878

Keyword

nonn

Author

Frederic E.D. Michaud (famillesmichaud(AT)hotmail.com), Jun 16 2004

Extensions

More terms from Johan Claes, Jun 16 2004

Status

approved