a_{k+1} = 6*a_k + 11*a_{k-1} - 19*a_{k-2} - 4*a_{k-3} + a_{k-4}, a_1=1, a_2=2, a_3=19, a_4=118, a_5=875.
A055518
a_{k+1} = 6*a_k + 11*a_{k-1} - 19*a_{k-2} - 4*a_{k-3} + a_{k-4}, a_1=1, a_2=2, a_3=19, a_4=118, a_5=875.
Terms
- a(0) =1a(1) =2a(2) =19a(3) =118a(4) =875a(5) =6180a(6) =44389a(7) =317236a(8) =2270893a(9) =16247718a(10) =116267271a(11) =831957002a(12) =5953209015a(13) =42598982984a(14) =304823192665
External references
- oeis: A055518