a(n) = 7*a(n-1) - 7*a(n-2) + a(n-3) for n > 2; a(0) = 0, a(1) = 51, a(2) = 340.
A155464
a(n) = 7*a(n-1) - 7*a(n-2) + a(n-3) for n > 2; a(0) = 0, a(1) = 51, a(2) = 340.
Terms
- a(0) =0a(1) =51a(2) =340a(3) =2023a(4) =11832a(5) =69003a(6) =402220a(7) =2344351a(8) =13663920a(9) =79639203a(10) =464171332a(11) =2705388823a(12) =15768161640a(13) =91903581051a(14) =535653324700
External references
- oeis: A155464