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 initial terms 6, 13, 39, 130, 455, 1638.
A216508
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 initial terms 6, 13, 39, 130, 455, 1638.
Terms
- a(0) =6a(1) =13a(2) =39a(3) =130a(4) =455a(5) =1638a(6) =6006a(7) =22308a(8) =83655a(9) =316030a(10) =1200914a(11) =4585308a(12) =17577014a(13) =67603887a(14) =260757536a(15) =1008258225a(16) =3906958055a(17) =15167837542a(18) =58983478554a(19) =229708325847a(20) =895760071050
External references
- oeis: A216508