a(n) = binomial(2*n+6,n+7)*(n^2+7*n+1)/(n+8) = f(n,n+6) where f is given in A034261.
A034273
a(n) = binomial(2*n+6,n+7)*(n^2+7*n+1)/(n+8) = f(n,n+6) where f is given in A034261.
Terms
- a(0) =0a(1) =1a(2) =19a(3) =186a(4) =1365a(5) =8540a(6) =48348a(7) =255816a(8) =1289739a(9) =6273135a(10) =29683225a(11) =137447310a(12) =625482585a(13) =2806282440a(14) =12443418600a(15) =54633668400a(16) =237871030860
External references
- oeis: A034273