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 0, 0, -1, -8, -45, -221.
A216540
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 0, 0, -1, -8, -45, -221.
Terms
- a(0) =0a(1) =0a(2) =-1a(3) =-8a(4) =-45a(5) =-221a(6) =-1014a(7) =-4472a(8) =-19227a(9) =-81224a(10) =-338767a(11) =-1399320a(12) =-5736705a(13) =-23377770a(14) =-94804944a(15) =-382930847a(16) =-1541565610a(17) =-6188513994a(18) =-24784429501a(19) =-99058333803a(20) =-395227906723
External references
- oeis: A216540