A fourth-order linear divisibility sequence: a(n) = (2^n + 1)*(2^(3*n) - 1)/ ( (2 + 1)*(2^3 - 1) ).
A238538
A fourth-order linear divisibility sequence: a(n) = (2^n + 1)*(2^(3*n) - 1)/ ( (2 + 1)*(2^3 - 1) ).
Terms
- a(0) =1a(1) =15a(2) =219a(3) =3315a(4) =51491a(5) =811395a(6) =12882499a(7) =205321155a(8) =3278747331a(9) =52408827075a(10) =838132189379
External references
- oeis: A238538