A051289 - cp's OEIS frontend

A051289 Triangular array T read by rows: T(n,k)=P(2n+1,n,2k+1), where P(n,k,c)=number of vectors (x(1),x(2,),...,x(n)) of k 1's and n-k 0's such that x(i)=x(n+1-i) for exactly c values of i.

n	a(n)
0	1
1	2
2	1
3	4
4	4
5	2
6	8
7	12
8	12
9	3
10	16
11	32
12	48
13	24
14	6
15	32
16	80
17	160
18	120
19	60
20	10
21	64
22	192
23	480
24	480
25	360
26	120
27	20
28	128
29	448
30	1344
31	1680
32	1680
33	840
34	280
35	35
36	256
37	1024
38	3584
39	5376
40	6720
41	4480
42	2240
43	560
44	70
45	512
46	2304
47	9216
48	16128
49	24192

[1, 2, 1, 4, 4, 2, 8, 12, 12, 3, 16, 32, 48, 24, 6, 32, 80, 160, 120, 60, 10, 64, 192, 480, 480, 360, 120, 20, 128, 448, 1344, 1680, 1680, 840, 280, 35, 256, 1024, 3584, 5376, 6720, 4480, 2240, 560, 70, 512, 2304, 9216, 16128, 24192]

cp's OEIS Frontend

A051289 Triangular array T read by rows: T(n,k)=P(2n+1,n,2k+1), where P(n,k,c)=number of vectors (x(1),x(2,),...,x(n)) of k 1's and n-k 0's such that x(i)=x(n+1-i) for exactly c values of i.

Table of values

List of values