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)=1, k=-1 and l=-1.

A176953

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)=1, k=-1 and l=-1.

Terms

    a(0) =1a(1) =1a(2) =-1a(3) =-5a(4) =-17a(5) =-49a(6) =-129a(7) =-305a(8) =-609a(9) =-801a(10) =735a(11) =10911a(12) =53983a(13) =203551a(14) =651487a(15) =1796639a(16) =4084447a(17) =6188831a(18) =-4060449a(19) =-84814049a(20) =-455815457a(21) =-1824908513a(22) =-6141218081a(23) =-17711864033a(24) =-42059573537a(25) =-67468774625a(26) =33608030943

External references