a(n) = n! * Sum_{k=0..floor(n/4)} (-n/24)^k /(k! * (n-4*k)!).
A362345
a(n) = n! * Sum_{k=0..floor(n/4)} (-n/24)^k /(k! * (n-4*k)!).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =-3a(5) =-24a(6) =-89a(7) =-244a(8) =1681a(9) =24382a(10) =155401a(11) =695146a(12) =-7490339a(13) =-157336464a(14) =-1421454033a(15) =-8817579224a(16) =129268310081
External references
- oeis: A362345