A155868 - cp's OEIS frontend

A155868 Triangle T(n, k) = (-1)^nStirlingS1(n, j)StirlingS1(n, n-j), with T(n, 0) = T(n, n) = 1, read by rows.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	6
8	6
9	1
10	1
11	36
12	121
13	36
14	1
15	1
16	240
17	1750
18	1750
19	240
20	1
21	1
22	1800
23	23290
24	50625
25	23290
26	1800
27	1
28	1
29	15120
30	308700
31	1193640
32	1193640
33	308700
34	15120
35	1
36	1
37	141120
38	4207896
39	25738720
40	45819361
41	25738720
42	4207896
43	141120
44	1
45	1
46	1451520
47	59832864
48	535810464
49	1510458516
50	1510458516
51	535810464
52	59832864
53	1451520
54	1

[1, 1, 1, 1, 1, 1, 1, 6, 6, 1, 1, 36, 121, 36, 1, 1, 240, 1750, 1750, 240, 1, 1, 1800, 23290, 50625, 23290, 1800, 1, 1, 15120, 308700, 1193640, 1193640, 308700, 15120, 1, 1, 141120, 4207896, 25738720, 45819361, 25738720, 4207896, 141120, 1, 1, 1451520, 59832864, 535810464, 1510458516, 1510458516, 535810464, 59832864, 1451520, 1]

cp's OEIS Frontend

A155868 Triangle T(n, k) = (-1)^nStirlingS1(n, j)StirlingS1(n, n-j), with T(n, 0) = T(n, n) = 1, read by rows.

Table of values

List of values

cp's OEIS Frontend

A155868 Triangle T(n, k) = (-1)^n*StirlingS1(n, j)*StirlingS1(n, n-j), with T(n, 0) = T(n, n) = 1, read by rows.

Table of values

List of values

A155868 Triangle T(n, k) = (-1)^nStirlingS1(n, j)StirlingS1(n, n-j), with T(n, 0) = T(n, n) = 1, read by rows.