a(n) = Product_{i=1..n} ((i+4)*(i+5)*(i+6)*(i+7))/(i*(i+1)*(i+2)*(i+3)).
A047835
a(n) = Product_{i=1..n} ((i+4)*(i+5)*(i+6)*(i+7))/(i*(i+1)*(i+2)*(i+3)).
Terms
- a(0) =1a(1) =70a(2) =1764a(3) =24696a(4) =232848a(5) =1646568a(6) =9343620a(7) =44537922a(8) =184225041a(9) =677352676a(10) =2254684432a(11) =6892441920a(12) =19571505408a(13) =52101067968a(14) =131018862096a(15) =313203587004a(16) =715536058545
External references
- oeis: A047835