Let M(n) = {{n, 0, 1}, {1, 0, 0}, {0, 1, 0}}, then a(n) is the upper-right term of M(n)*M(n-1)*...*M(1).
A130619
Let M(n) = {{n, 0, 1}, {1, 0, 0}, {0, 1, 0}}, then a(n) is the upper-right term of M(n)*M(n-1)*...*M(1).
Terms
- a(0) =0a(1) =1a(2) =2a(3) =6a(4) =25a(5) =127a(6) =768a(7) =5401a(8) =43335a(9) =390783a(10) =3913231a(11) =43088876a(12) =517457295a(13) =6730858066a(14) =94275101800
External references
- oeis: A130619