Finite sum involving signless Stirling numbers of the first kind and the Bell numbers. Appears in the process of normal ordering of n-th power of (a)^2*(a+*a), where a+ and a are boson creation and annihilation operators, respectively.
A121629
Finite sum involving signless Stirling numbers of the first kind and the Bell numbers. Appears in the process of normal ordering of n-th power of (a)^2*(a+*a), where a+ and a are boson creation and annihilation operators, respectively.
Terms
- a(0) =1a(1) =3a(2) =16a(3) =121a(4) =1179a(5) =14026a(6) =196783a(7) =3177861a(8) =58019356a(9) =1181098459a(10) =26515026561a(11) =650572403218
External references
- oeis: A121629