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)=9, k=-1 and l=-1.

A177184

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)=9, k=-1 and l=-1.

Terms

    a(0) =1a(1) =9a(2) =15a(3) =107a(4) =479a(5) =3103a(6) =18031a(7) =117727a(8) =755599a(9) =5064687a(10) =34093263a(11) =234114735a(12) =1620229839a(13) =11340760367a(14) =79951746767a(15) =567945479727

External references