A275784 - cp's OEIS frontend

A275784 Number A(n,k) of up-down sequences with k copies each of 1,2,...,n; square array A(n,k), n>=0, k>=0, read by antidiagonals.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	0
8	1
9	1
10	1
11	0
12	1
13	2
14	1
15	1
16	0
17	1
18	4
19	5
20	1
21	1
22	0
23	1
24	12
25	53
26	16
27	1
28	1
29	0
30	1
31	36
32	761
33	936
34	61
35	1
36	1
37	0
38	1
39	120
40	12661
41	87336
42	25325
43	272
44	1
45	1
46	0
47	1
48	400
49	229705
50	9929000
51	18528505
52	933980
53	1385
54	1
55	1
56	0
57	1
58	1400
59	4410665
60	1267945800
61	17504311533
62	6376563600
63	45504649
64	7936
65	1

[1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 2, 1, 1, 0, 1, 4, 5, 1, 1, 0, 1, 12, 53, 16, 1, 1, 0, 1, 36, 761, 936, 61, 1, 1, 0, 1, 120, 12661, 87336, 25325, 272, 1, 1, 0, 1, 400, 229705, 9929000, 18528505, 933980, 1385, 1, 1, 0, 1, 1400, 4410665, 1267945800, 17504311533, 6376563600, 45504649, 7936, 1]

cp's OEIS Frontend

A275784 Number A(n,k) of up-down sequences with k copies each of 1,2,...,n; square array A(n,k), n>=0, k>=0, read by antidiagonals.

Table of values

List of values