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

A176605

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

Terms

    a(0) =1a(1) =1a(2) =3a(3) =8a(4) =23a(5) =72a(6) =239a(7) =825a(8) =2929a(9) =10624a(10) =39193a(11) =146587a(12) =554535a(13) =2118042a(14) =8156595a(15) =31635298a(16) =123462515a(17) =484483902a(18) =1910465543a(19) =7566438417a(20) =30084771297a(21) =120044573286a(22) =480550302501

External references