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=1 and l=-1.

A176829

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=1 and l=-1.

Terms

    a(0) =1a(1) =3a(2) =7a(3) =25a(4) =95a(5) =393a(6) =1711a(7) =7741a(8) =36007a(9) =171097a(10) =826839a(11) =4050957a(12) =20074303a(13) =100438233a(14) =506677279a(15) =2574292749a(16) =13161031191a(17) =67656253081a(18) =349499197799

External references