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)=4, k=0 and l=-2.
A176756
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)=4, k=0 and l=-2.
Terms
- a(0) =1a(1) =4a(2) =6a(3) =26a(4) =98a(5) =438a(6) =1970a(7) =9294a(8) =44698a(9) =219766a(10) =1096930a(11) =5549614a(12) =28383498a(13) =146538150a(14) =762627954a(15) =3996744862a(16) =21074272538a(17) =111723476502a(18) =595145562242
External references
- oeis: A176756