A161628 - cp's OEIS frontend

A161628 E.g.f.: A(x,y) = LambertW(xyexp(x))/(xyexp(x)), as a triangle of coefficients T(n,k) = [x^n*y^k/n! ] A(x,y), read by rows.

n	a(n)
0	1
1	0
2	-1
3	0
4	-2
5	3
6	0
7	-3
8	18
9	-16
10	0
11	-4
12	72
13	-192
14	125
15	0
16	-5
17	240
18	-1440
19	2500
20	-1296
21	0
22	-6
23	720
24	-8640
25	30000
26	-38880
27	16807
28	0
29	-7
30	2016
31	-45360
32	280000
33	-680400
34	705894
35	-262144
36	0
37	-8
38	5376
39	-217728
40	2240000
41	-9072000
42	16941456
43	-14680064
44	4782969

[1, 0, -1, 0, -2, 3, 0, -3, 18, -16, 0, -4, 72, -192, 125, 0, -5, 240, -1440, 2500, -1296, 0, -6, 720, -8640, 30000, -38880, 16807, 0, -7, 2016, -45360, 280000, -680400, 705894, -262144, 0, -8, 5376, -217728, 2240000, -9072000, 16941456, -14680064, 4782969]

cp's OEIS Frontend

A161628 E.g.f.: A(x,y) = LambertW(xyexp(x))/(xyexp(x)), as a triangle of coefficients T(n,k) = [x^n*y^k/n! ] A(x,y), read by rows.

Table of values

List of values

cp's OEIS Frontend

A161628 E.g.f.: A(x,y) = LambertW(x*y*exp(x))/(x*y*exp(x)), as a triangle of coefficients T(n,k) = [x^n*y^k/n! ] A(x,y), read by rows.

Table of values

List of values

A161628 E.g.f.: A(x,y) = LambertW(xyexp(x))/(xyexp(x)), as a triangle of coefficients T(n,k) = [x^n*y^k/n! ] A(x,y), read by rows.