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)=7, k=1 and l=-1.

A177177

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)=7, k=1 and l=-1.

Terms

    a(0) =1a(1) =7a(2) =15a(3) =81a(4) =375a(5) =2113a(6) =11911a(7) =71221a(8) =433343a(9) =2704049a(10) =17125871a(11) =110044549a(12) =714925975a(13) =4690166833a(14) =31020995831a(15) =206646565637

External references