a(n) = Sum_{k=0..n} A271703(k + n, n), row sums of A355005.
A355004
a(n) = Sum_{k=0..n} A271703(k + n, n), row sums of A355005.
Terms
- a(0) =1a(1) =3a(2) =43a(3) =1333a(4) =63321a(5) =4034341a(6) =321994723a(7) =30869387193
External references
- oeis: A355004