A283613 - cp's OEIS frontend

A283613 T(n,k) = number of linear arrays of n 1's, n -1's, and k 0's such that no two adjacent elements are equal.

n	a(n)
0	1
1	1
2	2
3	6
4	6
5	2
6	2
7	12
8	30
9	38
10	24
11	6
12	2
13	18
14	74
15	174
16	248
17	212
18	100
19	20
20	2
21	24
22	138
23	480
24	1092
25	1668
26	1700
27	1110
28	420
29	70
30	2
31	30
32	222
33	1026
34	3228
35	7188
36	11492
37	13140
38	10500
39	5572
40	1764
41	252
42	2
43	36
44	326
45	1882
46	7580
47	22274
48	48852
49	80672
50	100044
51	91840
52	60564
53	27132
54	7392
55	924
56	2
57	42
58	450
59	3118
60	15324
61	56040
62	156664
63	339720
64	574716
65	757148
66	769356
67	591444
68	332640
69	129096
70	30888
71	3432
72	2
73	48
74	594
75	4804
76	27888
77	122136
78	415576
79	1118268
80	2403588
81	4143116
82	5719788
83	6281856
84	5416488
85	3586968
86	1760616
87	603174
88	128700
89	12870

[1, 1, 2, 6, 6, 2, 2, 12, 30, 38, 24, 6, 2, 18, 74, 174, 248, 212, 100, 20, 2, 24, 138, 480, 1092, 1668, 1700, 1110, 420, 70, 2, 30, 222, 1026, 3228, 7188, 11492, 13140, 10500, 5572, 1764, 252, 2, 36, 326, 1882, 7580, 22274, 48852, 80672, 100044, 91840, 60564, 27132, 7392, 924, 2, 42, 450, 3118, 15324, 56040, 156664, 339720, 574716, 757148, 769356, 591444, 332640, 129096, 30888, 3432, 2, 48, 594, 4804, 27888, 122136, 415576, 1118268, 2403588, 4143116, 5719788, 6281856, 5416488, 3586968, 1760616, 603174, 128700, 12870]

cp's OEIS Frontend

A283613 T(n,k) = number of linear arrays of n 1's, n -1's, and k 0's such that no two adjacent elements are equal.

Table of values

List of values