A199221 - cp's OEIS frontend

A199221 Triangle read by rows: T(n,k) = (n+1-k)|s(n,n+1-k)| - 2|s(n-1,n-k)|, where s(n,k) are the signed Stirling numbers of the first kind and 1 <= k <= n.

n	a(n)
1	-1
2	0
3	1
4	1
5	4
6	2
7	2
8	12
9	18
10	6
11	3
12	28
13	83
14	88
15	24
16	4
17	55
18	270
19	575
20	500
21	120
22	5
23	96
24	705
25	2490
26	4324
27	3288
28	720
29	6
30	154
31	1582
32	8330
33	23828
34	35868
35	24696
36	5040
37	7
38	232
39	3178
40	23296
41	98707
42	242872
43	328236
44	209088
45	40320
46	8
47	333
48	5868
49	57078
50	334740
51	1212057
52	2658472
53	3298932
54	1972512
55	362880
56	9
57	460
58	10140
59	126300
60	977865
61	4873680
62	15637290
63	31292600
64	36207576
65	20531520
66	3628800

[-1, 0, 1, 1, 4, 2, 2, 12, 18, 6, 3, 28, 83, 88, 24, 4, 55, 270, 575, 500, 120, 5, 96, 705, 2490, 4324, 3288, 720, 6, 154, 1582, 8330, 23828, 35868, 24696, 5040, 7, 232, 3178, 23296, 98707, 242872, 328236, 209088, 40320, 8, 333, 5868, 57078, 334740, 1212057, 2658472, 3298932, 1972512, 362880, 9, 460, 10140, 126300, 977865, 4873680, 15637290, 31292600, 36207576, 20531520, 3628800]

cp's OEIS Frontend

A199221 Triangle read by rows: T(n,k) = (n+1-k)|s(n,n+1-k)| - 2|s(n-1,n-k)|, where s(n,k) are the signed Stirling numbers of the first kind and 1 <= k <= n.

Table of values

List of values

cp's OEIS Frontend

A199221 Triangle read by rows: T(n,k) = (n+1-k)*|s(n,n+1-k)| - 2*|s(n-1,n-k)|, where s(n,k) are the signed Stirling numbers of the first kind and 1 <= k <= n.

Table of values

List of values

A199221 Triangle read by rows: T(n,k) = (n+1-k)|s(n,n+1-k)| - 2|s(n-1,n-k)|, where s(n,k) are the signed Stirling numbers of the first kind and 1 <= k <= n.