Self-composition of the repunits; g.f.: A(x) = G(G(x)), where G(x) = g.f. of A002275.
A276644
Self-composition of the repunits; g.f.: A(x) = G(G(x)), where G(x) = g.f. of A002275.
Terms
- a(0) =0a(1) =1a(2) =22a(3) =464a(4) =9658a(5) =199666a(6) =4112922a(7) =84558014a(8) =1736623658a(9) =35646098566a(10) =731452470122
External references
- oeis: A276644