G.f. satisfies: A(x) = Series_Reversion[ x/sqrt(1 + 4*A(x)) ] with A(0)=0.
A140092
G.f. satisfies: A(x) = Series_Reversion[ x/sqrt(1 + 4*A(x)) ] with A(0)=0.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =28a(4) =174a(5) =1308a(6) =11300a(7) =108808a(8) =1145078a(9) =12996332a(10) =157580252a(11) =2026874424a(12) =27507762028a(13) =392226116696
External references
- oeis: A140092