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=-2 and l=0.

A177115

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=-2 and l=0.

Terms

    a(0) =1a(1) =3a(2) =2a(3) =7a(4) =18a(5) =72a(6) =268a(7) =1075a(8) =4282a(9) =17400a(10) =71116a(11) =293620a(12) =1220752a(13) =5112038a(14) =21537872a(15) =91258183a(16) =388625970a(17) =1662613076a(18) =7142659852a(19) =30802016924a(20) =133292024608a(21) =578640249138

External references