A104345 - cp's OEIS frontend

A104345 Triangle read by rows: T(n,k) is the number of alternating permutations on [n+1] with 1 in position k+1, 0<=k<=n.

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	2
7	3
8	3
9	2
10	5
11	8
12	6
13	8
14	5
15	16
16	25
17	20
18	20
19	25
20	16
21	61
22	96
23	75
24	80
25	75
26	96
27	61
28	272
29	427
30	336
31	350
32	350
33	336
34	427
35	272
36	1385
37	2176
38	1708
39	1792
40	1750
41	1792
42	1708
43	2176
44	1385
45	7936
46	12465
47	9792
48	10248
49	10080
50	10080
51	10248
52	9792
53	12465
54	7936

[1, 1, 1, 1, 2, 1, 2, 3, 3, 2, 5, 8, 6, 8, 5, 16, 25, 20, 20, 25, 16, 61, 96, 75, 80, 75, 96, 61, 272, 427, 336, 350, 350, 336, 427, 272, 1385, 2176, 1708, 1792, 1750, 1792, 1708, 2176, 1385, 7936, 12465, 9792, 10248, 10080, 10080, 10248, 9792, 12465, 7936]

cp's OEIS Frontend

A104345 Triangle read by rows: T(n,k) is the number of alternating permutations on [n+1] with 1 in position k+1, 0<=k<=n.

Table of values

List of values