a(n+1) = a(n) + 2n*(2n+1)*a(n-1), with a(0) = a(1) = 1.
A003148
a(n+1) = a(n) + 2n*(2n+1)*a(n-1), with a(0) = a(1) = 1.
Terms
- a(0) =1a(1) =1a(2) =7a(3) =27a(4) =321a(5) =2265a(6) =37575a(7) =390915a(8) =8281665a(9) =114610545a(10) =2946939975a(11) =51083368875
External references
- oeis: A003148