A054255 - cp's OEIS frontend

A054255 Triangle T(n,k) (n >= 1, 0<=k<=n) giving number of preferential arrangements of n things beginning with k (transposed, then read by rows).

n	a(n)
1	1
2	1
3	2
4	2
5	5
6	6
7	6
8	18
9	25
10	26
11	24
12	84
13	134
14	149
15	150
16	120
17	480
18	870
19	1050
20	1081
21	1082
22	720
23	3240
24	6600
25	8700
26	9302
27	9365
28	9366
29	5040
30	25200
31	57120
32	82320
33	92526
34	94458
35	94585
36	94586
37	40320
38	221760
39	554400
40	871920
41	1038744
42	1085364
43	1091414
44	1091669
45	1091670

[1, 1, 2, 2, 5, 6, 6, 18, 25, 26, 24, 84, 134, 149, 150, 120, 480, 870, 1050, 1081, 1082, 720, 3240, 6600, 8700, 9302, 9365, 9366, 5040, 25200, 57120, 82320, 92526, 94458, 94585, 94586, 40320, 221760, 554400, 871920, 1038744, 1085364, 1091414, 1091669, 1091670]

cp's OEIS Frontend

A054255 Triangle T(n,k) (n >= 1, 0<=k<=n) giving number of preferential arrangements of n things beginning with k (transposed, then read by rows).

Table of values

List of values