a(n) = Sum_{i=0..n} Stirling2(n,i)*2^(3i).
A221159
a(n) = Sum_{i=0..n} Stirling2(n,i)*2^(3i).
Terms
- a(0) =1a(1) =8a(2) =72a(3) =712a(4) =7624a(5) =87496a(6) =1067976a(7) =13781448a(8) =187104200a(9) =2661876168a(10) =39549629384a(11) =611918940616
External references
- oeis: A221159