Numerator of floor(Pi*10^n)/10^n.

Terms

a(0) =3a(1) =31a(2) =157a(3) =3141a(4) =6283a(5) =314159a(6) =392699a(7) =15707963a(8) =62831853a(9) =3141592653a(10) =6283185307a(11) =157079632679