A216716 - cp's OEIS frontend

A216716 Triangle read by rows: number of permutations of [1..n] with k progressions of rise 2, distance 1 and length 3 (n >= 0, k >= 0).

n	a(n)
0	1
1	1
2	2
3	6
4	24
5	114
6	6
7	674
8	44
9	2
10	4714
11	294
12	30
13	2
14	37754
15	2272
16	276
17	16
18	2
19	340404
20	20006
21	2236
22	216
23	16
24	2
25	3412176
26	193896
27	20354
28	2200
29	156
30	16
31	2
32	37631268
33	2056012
34	206696
35	20738
36	1908
37	160
38	16
39	2
40	452745470
41	23744752
42	2273420
43	215024
44	21136
45	1616
46	164
47	16
48	2

[1, 1, 2, 6, 24, 114, 6, 674, 44, 2, 4714, 294, 30, 2, 37754, 2272, 276, 16, 2, 340404, 20006, 2236, 216, 16, 2, 3412176, 193896, 20354, 2200, 156, 16, 2, 37631268, 2056012, 206696, 20738, 1908, 160, 16, 2, 452745470, 23744752, 2273420, 215024, 21136, 1616, 164, 16, 2]

cp's OEIS Frontend

A216716 Triangle read by rows: number of permutations of [1..n] with k progressions of rise 2, distance 1 and length 3 (n >= 0, k >= 0).

Table of values

List of values