a(0)=1; thereafter, a(m+1) = Sum_{k=0..m} k!*a(m-k).
A051295
a(0)=1; thereafter, a(m+1) = Sum_{k=0..m} k!*a(m-k).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =15a(5) =54a(6) =235a(7) =1237a(8) =7790a(9) =57581a(10) =489231a(11) =4690254a(12) =49986715a(13) =585372877a(14) =7463687750a(15) =102854072045
External references
- oeis: A051295