A188249 - cp's OEIS frontend

A188249 T(n,k)=Number of arrangements of n+2 nonzero numbers x(i) in -k..k with the sum of x(i)*x(i+1) equal to zero.

n	a(n)
1	4
2	16
3	0
4	36
5	20
6	12
7	64
8	52
9	120
10	0
11	100
12	144
13	548
14	300
15	40
16	144
17	208
18	1504
19	1632
20	1284
21	0
22	196
23	436
24	3292
25	7092
26	12692
27	4132
28	140
29	256
30	532
31	6376
32	16484
33	58824
34	51196
35	16272
36	0
37	324
38	816
39	10564
40	43440
41	193232
42	368588
43	355396
44	57808
45	504
46	400
47	1072
48	17040
49	75080

[4, 16, 0, 36, 20, 12, 64, 52, 120, 0, 100, 144, 548, 300, 40, 144, 208, 1504, 1632, 1284, 0, 196, 436, 3292, 7092, 12692, 4132, 140, 256, 532, 6376, 16484, 58824, 51196, 16272, 0, 324, 816, 10564, 43440, 193232, 368588, 355396, 57808, 504, 400, 1072, 17040, 75080]

cp's OEIS Frontend

A188249 T(n,k)=Number of arrangements of n+2 nonzero numbers x(i) in -k..k with the sum of x(i)*x(i+1) equal to zero.

Table of values

List of values