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.

A177123

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) =17a(3) =87a(4) =417a(5) =2347a(6) =13497a(7) =81607a(8) =504537a(9) =3192747a(10) =20529537a(11) =133876327a(12) =882924177a(13) =5879675307a(14) =39478170697a(15) =266973261127

External references