Least k such that Sum_{i=0..n} k^i / i! is a positive integer.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =2a(5) =30a(6) =24a(7) =21a(8) =90a(9) =126a(10) =210a(11) =660a(12) =462a(13) =8580a(14) =6006a(15) =1980a(16) =4410a(17) =157080a(18) =39270a(19) =2106720a(20) =510510a(21) =5087250a(22) =1963500a(23) =91861770a(24) =29099070a(25) =1806420a(26) =17117100a(27) =48498450a(28) =135795660a(29) =340510170