Factorial splitting: write n! = x*y*z with x <= y <= z and minimal z-x; sequence gives value of x.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =4a(6) =8a(7) =14a(8) =32a(9) =70a(10) =140a(11) =324a(12) =768a(13) =1800a(14) =4368a(15) =10800a(16) =27300a(17) =70560a(18) =184800a(19) =494208a(20) =1343680a(21) =3704400a(22) =10388250a(23) =29560960a(24) =85250880a(25) =249318000a(26) =738720000a(27) =2216160000a(28) =6729074352a(29) =20675655000