G.f.: exp( Sum_{n>=1} A000204(n)^3 * x^n/n ) where A000204 is the Lucas numbers.
A203803
G.f.: exp( Sum_{n>=1} A000204(n)^3 * x^n/n ) where A000204 is the Lucas numbers.
Terms
- a(0) =1a(1) =1a(2) =14a(3) =35a(4) =205a(5) =744a(6) =3414a(7) =13926a(8) =60060a(9) =252330a(10) =1072902a(11) =4537272a(12) =19234463a(13) =81452015a(14) =345084970a(15) =1461714517a(16) =6192083147a(17) =26229794928a(18) =111111714300a(19) =470675847900
External references
- oeis: A203803