G.f.: A(x) = exp( Sum_{n>=1} 6^n * x^n/(n*(1+x^n)) ).
A259276
G.f.: A(x) = exp( Sum_{n>=1} 6^n * x^n/(n*(1+x^n)) ).
Terms
- a(0) =1a(1) =6a(2) =30a(3) =186a(4) =1110a(5) =6630a(6) =39846a(7) =239010a(8) =1433910a(9) =8603790a(10) =51622446a(11) =309733890a(12) =1858404990a(13) =11150428470a(14) =66902565630a(15) =401415404586
External references
- oeis: A259276