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)=2, k=-1 and l=1.

A176962

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)=2, k=-1 and l=1.

Terms

    a(0) =1a(1) =2a(2) =3a(3) =8a(4) =25a(5) =87a(6) =317a(7) =1190a(8) =4563a(9) =17797a(10) =70399a(11) =281813a(12) =1139659a(13) =4649403a(14) =19112963a(15) =79096156a(16) =329258425a(17) =1377798891a(18) =5792421109a(19) =24454224311a(20) =103631241913a(21) =440674939193

External references