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)=5, k=0 and l=-1.

A176751

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)=5, k=0 and l=-1.

Terms

    a(0) =1a(1) =5a(2) =9a(3) =42a(4) =173a(5) =846a(6) =4177a(7) =21691a(8) =114911a(9) =622910a(10) =3428951a(11) =19138401a(12) =108003785a(13) =615344844a(14) =3534413525a(15) =20444816044a(16) =118994823449a(17) =696370777980

External references