a(n) = ([n]_phi! - [n]_{1-phi}!)/sqrt(5), where [n]_q! is the q-factorial, phi = (1+sqrt(5))/2.
A274985
a(n) = ([n]_phi! - [n]_{1-phi}!)/sqrt(5), where [n]_q! is the q-factorial, phi = (1+sqrt(5))/2.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =6a(4) =58a(5) =948a(6) =25992a(7) =1179016a(8) =87713040a(9) =10646068080
External references
- oeis: A274985