Floor of the value of Riemann's xi function at n.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =1a(7) =1a(8) =2a(9) =3a(10) =5a(11) =8a(12) =13a(13) =21a(14) =36a(15) =63a(16) =113a(17) =206a(18) =386a(19) =736a(20) =1433a(21) =2849a(22) =5773a(23) =11919a(24) =25059a(25) =53613a(26) =116658a(27) =258032a(28) =579856a(29) =1323273