Sequence defined by the recurrence formula a(n+1)=sum(a(p)*a(n-p)+k,p=0..n)+l for n>=1, with here a(0)=1, a(1)=2, k=-2 and l=0.

A177113

Sequence defined by the recurrence formula a(n+1)=sum(a(p)*a(n-p)+k,p=0..n)+l for n>=1, with here a(0)=1, a(1)=2, k=-2 and l=0.

Terms

    a(0) =1a(1) =2a(2) =0a(3) =-2a(4) =-12a(5) =-42a(6) =-144a(7) =-466a(8) =-1476a(9) =-4522a(10) =-13384a(11) =-37794a(12) =-99964a(13) =-237738a(14) =-455104a(15) =-366706a(16) =2555276a(17) =20416150a(18) =103683976a(19) =445363518a(20) =1736519252a(21) =6310980502a(22) =21595986320a(23) =69654711278a(24) =210206070236a(25) =581729708502

External references