a(n) = Sum_{k = 0..n - 1} (a(n - 1) + k) for n>0, a(0) = 1.
A266083
a(n) = Sum_{k = 0..n - 1} (a(n - 1) + k) for n>0, a(0) = 1.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =12a(4) =54a(5) =280a(6) =1695a(7) =11886a(8) =95116a(9) =856080a(10) =8560845a(11) =94169350a(12) =1130032266a(13) =14690419536a(14) =205665873595
External references
- oeis: A266083