a(n) = 13*a(n-1) - 65*a(n-2) + 156*a(n-3) - 182*a(n-4) + 91*a(n-5) - 13*a(n-6), with a(1)..a(6) as shown.
A161905
a(n) = 13*a(n-1) - 65*a(n-2) + 156*a(n-3) - 182*a(n-4) + 91*a(n-5) - 13*a(n-6), with a(1)..a(6) as shown.
Terms
- a(0) =2a(1) =4a(2) =13a(3) =52a(4) =221a(5) =949a(6) =4056a(7) =17186a(8) =72163a(9) =300482a(10) =1241981a(11) =5100758a(12) =20833813a(13) =84695026a(14) =342920942a(15) =1383646433a(16) =5566235714a(17) =22334785486a(18) =89420529809a(19) =357319721889
External references
- oeis: A161905