a(n) is the number of integer values of the function F_2n(x) = Product_{i=0..2n-1} (x + i) / Sum_{i=0..2n-1} (x + i).
A370601
a(n) is the number of integer values of the function F_2n(x) = Product_{i=0..2n-1} (x + i) / Sum_{i=0..2n-1} (x + i).
Terms
- a(0) =0a(1) =1a(2) =3a(3) =23a(4) =37a(5) =156a(6) =371a(7) =1207a(8) =2826a(9) =8738a(10) =14839a(11) =60738a(12) =80177a(13) =148702a(14) =466545a(15) =1673039a(16) =2077633a(17) =4771287a(18) =10665251a(19) =26790730a(20) =72170979a(21) =212182718a(22) =248771227a(23) =1074691776a(24) =1488526850a(25) =2533202074a(26) =8444006973a(27) =13950326222a(28) =18313391221a(29) =74263958970
External references
- oeis: A370601