a(0)=1, then the fractional part of Pi*a(n) decreases monotonically to zero.

Terms

a(0) =1a(1) =8a(2) =15a(3) =22a(4) =29a(5) =36a(6) =43a(7) =50a(8) =57a(9) =64a(10) =71a(11) =78a(12) =85a(13) =92a(14) =99a(15) =106a(16) =219a(17) =332a(18) =445a(19) =558a(20) =671a(21) =784a(22) =897a(23) =1010a(24) =1123a(25) =1236a(26) =1349a(27) =1462a(28) =1575a(29) =1688