Pi = Sum_{n >= 0} a(n)/n!.

Terms

a(0) =3a(1) =0a(2) =0a(3) =0a(4) =3a(5) =1a(6) =5a(7) =6a(8) =5a(9) =0a(10) =1a(11) =4a(12) =7a(13) =8a(14) =0a(15) =6a(16) =7a(17) =10a(18) =7a(19) =10a(20) =4a(21) =10a(22) =6a(23) =16a(24) =1a(25) =11a(26) =20a(27) =3a(28) =18a(29) =12