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)=3, k=0 and l=-1.

A176749

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)=3, k=0 and l=-1.

Terms

    a(0) =1a(1) =3a(2) =5a(3) =18a(4) =65a(5) =262a(6) =1093a(7) =4731a(8) =20979a(9) =94930a(10) =436451a(11) =2033321a(12) =9577653a(13) =45538184a(14) =218263593a(15) =1053456780a(16) =5115724797a(17) =24977183908a(18) =122537039845a(19) =603755499411

External references