A295390 - cp's OEIS frontend

A295390 Number T(n,k) of permutations of [n] having exactly k consecutive 3-term arithmetic progressions; triangle T(n,k), n>=0, 0<=k<=max(n-2,0), read by rows.

n	a(n)
0	1
1	1
2	2
3	4
4	2
5	18
6	4
7	2
8	80
9	34
10	4
11	2
12	482
13	196
14	36
15	4
16	2
17	3280
18	1418
19	292
20	44
21	4
22	2
23	26244
24	11292
25	2426
26	304
27	48
28	4
29	2
30	231148
31	106132
32	22156
33	3010
34	372
35	56
36	4
37	2
38	2320130
39	1046176
40	225804
41	32308
42	3892
43	424
44	60
45	4
46	2
47	25238348
48	11679626
49	2585080
50	366484
51	42176
52	4540
53	472
54	68
55	4
56	2

[1, 1, 2, 4, 2, 18, 4, 2, 80, 34, 4, 2, 482, 196, 36, 4, 2, 3280, 1418, 292, 44, 4, 2, 26244, 11292, 2426, 304, 48, 4, 2, 231148, 106132, 22156, 3010, 372, 56, 4, 2, 2320130, 1046176, 225804, 32308, 3892, 424, 60, 4, 2, 25238348, 11679626, 2585080, 366484, 42176, 4540, 472, 68, 4, 2]

cp's OEIS Frontend

A295390 Number T(n,k) of permutations of [n] having exactly k consecutive 3-term arithmetic progressions; triangle T(n,k), n>=0, 0<=k<=max(n-2,0), read by rows.

Table of values

List of values