A divisibility sequence: (1/8)*(Pell(4*n) - 2*Pell(2*n)).
A273627
A divisibility sequence: (1/8)*(Pell(4*n) - 2*Pell(2*n)).
Terms
- a(0) =1a(1) =48a(2) =1715a(3) =58752a(4) =1998709a(5) =67914000a(6) =2307174311a(7) =78376578048
External references
- oeis: A273627