A121629 - cp's OEIS frontend

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.

n	a(n)
0	1
1	3
2	16
3	121
4	1179
5	14026
6	196783
7	3177861
8	58019356
9	1181098459
10	26515026561
11	650572403218
12	17316566815441
13	496889918749251
14	15288155067806104
15	502024850361876481
16	17522822345606176083
17	647790109599863145106
18	25283238154309049107231

[1, 3, 16, 121, 1179, 14026, 196783, 3177861, 58019356, 1181098459, 26515026561, 650572403218, 17316566815441, 496889918749251, 15288155067806104, 502024850361876481, 17522822345606176083, 647790109599863145106, 25283238154309049107231]

cp's OEIS Frontend

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.

Table of values

List of values

cp's OEIS Frontend

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.

Table of values

List of values

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.